70649867988 has 36 divisors (see below), whose sum is σ = 204099619360. Its totient is φ = 20185676496.

The previous prime is 70649867987. The next prime is 70649868001. The reversal of 70649867988 is 88976894607.

70649867988 is a `hidden beast` number, since 70 + 6 + 498 + 67 + 9 + 8 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70649867983) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 140178058 + ... + 140178561.

Almost surely, 2^70649867988 is an apocalyptic number.

It is an amenable number.

70649867988 is an abundant number, since it is smaller than the sum of its proper divisors (133449751372).

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

70649867988 is a wasteful number, since it uses less digits than its factorization.

70649867988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280356636 (or 280356631 counting only the distinct ones).

The product of its (nonzero) digits is 292626432, while the sum is 72.

The spelling of 70649867988 in words is "seventy billion, six hundred forty-nine million, eight hundred sixty-seven thousand, nine hundred eighty-eight".