70521505552 has 20 divisors (see below), whose sum is σ = 144672795036. Its totient is φ = 33186590720.

The previous prime is 70521505547. The next prime is 70521505573. The reversal of 70521505552 is 25550512507.

It can be written as a sum of positive squares in 2 ways, for example, as 55665796096 + 14855709456 = 235936^2 + 121884^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129634849 + ... + 129635392.

Almost surely, 2^70521505552 is an apocalyptic number.

It is an amenable number.

70521505552 is an abundant number, since it is smaller than the sum of its proper divisors (74151289484).

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

70521505552 is a wasteful number, since it uses less digits than its factorization.

70521505552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259270266 (or 259270260 counting only the distinct ones).

The product of its (nonzero) digits is 87500, while the sum is 37.

The spelling of 70521505552 in words is "seventy billion, five hundred twenty-one million, five hundred five thousand, five hundred fifty-two".