18737212421160 has 192 divisors, whose sum is σ = 61031991533760. Its totient is φ = 4985430912000.

The previous prime is 18737212421153. The next prime is 18737212421189. The reversal of 18737212421160 is 6112421273781.

It is a happy number.

18737212421160 is a `hidden beast` number, since 1 + 8 + 7 + 3 + 7 + 212 + 421 + 1 + 6 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1534447455 + ... + 1534459665.

It is an arithmetic number, because the mean of its divisors is an integer number (317874955905).

Almost surely, 2^{18737212421160} is an apocalyptic number.

18737212421160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18737212421160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30515995766880).

18737212421160 is an abundant number, since it is smaller than the sum of its proper divisors (42294779112600).

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

18737212421160 is a wasteful number, since it uses less digits than its factorization.

18737212421160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21400 (or 21393 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 45.

The spelling of 18737212421160 in words is "eighteen trillion, seven hundred thirty-seven billion, two hundred twelve million, four hundred twenty-one thousand, one hundred sixty".