19700542260 has 144 divisors (see below), whose sum is σ = 68833529856. Its totient is φ = 4467488256.

The previous prime is 19700542243. The next prime is 19700542283. The reversal of 19700542260 is 6224500791.

19700542260 is a `hidden beast` number, since 1 + 97 + 0 + 0 + 542 + 26 + 0 = 666.

It is a super-2 number, since 2×19700542260² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 98464 + ... + 221576.

It is an arithmetic number, because the mean of its divisors is an integer number (478010624).

Almost surely, 2^19700542260 is an apocalyptic number.

19700542260 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 19700542260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34416764928).

19700542260 is an abundant number, since it is smaller than the sum of its proper divisors (49132987596).

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

19700542260 is a wasteful number, since it uses less digits than its factorization.

19700542260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123262 (or 123257 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The spelling of 19700542260 in words is "nineteen billion, seven hundred million, five hundred forty-two thousand, two hundred sixty".