70864211520 has 168 divisors, whose sum is σ = 250331395704. Its totient is φ = 18386362368.

The previous prime is 70864211519. The next prime is 70864211521. The reversal of 70864211520 is 2511246807.

70864211520 is a `hidden beast` number, since 7 + 0 + 8 + 642 + 1 + 1 + 5 + 2 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (70864211519) and next prime (70864211521).

It can be written as a sum of positive squares in 4 ways, for example, as 2228595264 + 68635616256 = 47208^2 + 261984^2 .

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

It is not an unprimeable number, because it can be changed into a prime (70864211521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 225949 + ... + 439068.

Almost surely, 2^70864211520 is an apocalyptic number.

It is an amenable number.

70864211520 is an abundant number, since it is smaller than the sum of its proper divisors (179467184184).

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

70864211520 is a wasteful number, since it uses less digits than its factorization.

70864211520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 665077 (or 665064 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The spelling of 70864211520 in words is "seventy billion, eight hundred sixty-four million, two hundred eleven thousand, five hundred twenty".