70520861428900 has 27 divisors (see below), whose sum is σ = 153030451530369. Its totient is φ = 28208310980880.

The previous prime is 70520861428877. The next prime is 70520861429111. The reversal of 70520861428900 is 982416802507.

The square root of 70520861428900 is 8397670.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 25387510114404 + 45133351314496 = 5038602^2 + 6718136^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 83556817 + ... + 84396583.

Almost surely, 2^{70520861428900} is an apocalyptic number.

70520861428900 is the 8397670-th square number.

It is an amenable number.

70520861428900 is an abundant number, since it is smaller than the sum of its proper divisors (82509590101469).

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

70520861428900 is an frugal number, since it uses more digits than its factorization.

70520861428900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1679548 (or 839774 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 52.

The spelling of 70520861428900 in words is "seventy trillion, five hundred twenty billion, eight hundred sixty-one million, four hundred twenty-eight thousand, nine hundred".