70987531600 has 120 divisors (see below), whose sum is σ = 171786783960. Its totient is φ = 28189378560.

The previous prime is 70987531583. The next prime is 70987531613. The reversal of 70987531600 is 613578907.

It can be written as a sum of positive squares in 12 ways, for example, as 12943157824 + 58044373776 = 113768^2 + 240924^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 57759786 + ... + 57761014.

It is an arithmetic number, because the mean of its divisors is an integer number (1431556533).

Almost surely, 2^70987531600 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70987531600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85893391980).

70987531600 is an abundant number, since it is smaller than the sum of its proper divisors (100799252360).

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

70987531600 is a wasteful number, since it uses less digits than its factorization.

70987531600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2177 (or 2166 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 46.

The spelling of 70987531600 in words is "seventy billion, nine hundred eighty-seven million, five hundred thirty-one thousand, six hundred".