87070434971720 has 128 divisors (see below), whose sum is σ = 196966259733600. Its totient is φ = 34640668237824.

The previous prime is 87070434971719. The next prime is 87070434971731. The reversal of 87070434971720 is 2717943407078.

It can be written as a sum of positive squares in 16 ways, for example, as 19559266927396 + 67511168044324 = 4422586^2 + 8216518^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 87070434971720.

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 31 ways as a sum of consecutive naturals, for example, 16085427734 + ... + 16085433146.

Almost surely, 2^{87070434971720} is an apocalyptic number.

It is an amenable number.

87070434971720 is an abundant number, since it is smaller than the sum of its proper divisors (109895824761880).

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

87070434971720 is a wasteful number, since it uses less digits than its factorization.

87070434971720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8179 (or 8175 counting only the distinct ones).

The product of its (nonzero) digits is 16595712, while the sum is 59.

The spelling of 87070434971720 in words is "eighty-seven trillion, seventy billion, four hundred thirty-four million, nine hundred seventy-one thousand, seven hundred twenty".