18113693937570 has 384 divisors, whose sum is σ = 60889092526080. Its totient is φ = 3626597629440.

The previous prime is 18113693937529. The next prime is 18113693937571. The reversal of 18113693937570 is 7573939631181.

18113693937570 is a `hidden beast` number, since 1 + 8 + 113 + 69 + 393 + 7 + 5 + 70 = 666.

It is a super-3 number, since 3×18113693937570³ (a number of 41 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a junction number, because it is equal to n+sod(n) for n = 18113693937498 and 18113693937507.

It is not an unprimeable number, because it can be changed into a prime (18113693937571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 26067301 + ... + 26753159.

It is an arithmetic number, because the mean of its divisors is an integer number (158565345120).

Almost surely, 2^{18113693937570} is an apocalyptic number.

18113693937570 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 18113693937570, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30444546263040).

18113693937570 is an abundant number, since it is smaller than the sum of its proper divisors (42775398588510).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18113693937570 is a wasteful number, since it uses less digits than its factorization.

18113693937570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 686030 (or 686027 counting only the distinct ones).

The product of its (nonzero) digits is 25719120, while the sum is 63.

The spelling of 18113693937570 in words is "eighteen trillion, one hundred thirteen billion, six hundred ninety-three million, nine hundred thirty-seven thousand, five hundred seventy".