70723990988 has 48 divisors (see below), whose sum is σ = 150286973760. Its totient is φ = 28527268608.

The previous prime is 70723990943. The next prime is 70723991017. The reversal of 70723990988 is 88909932707.

It is a super-2 number, since 2×70723990988² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 70723990988.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119495 + ... + 394622.

It is an arithmetic number, because the mean of its divisors is an integer number (3130978620).

Almost surely, 2^70723990988 is an apocalyptic number.

It is an amenable number.

70723990988 is an abundant number, since it is smaller than the sum of its proper divisors (79562982772).

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

70723990988 is a wasteful number, since it uses less digits than its factorization.

70723990988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 514179 (or 514143 counting only the distinct ones).

The product of its (nonzero) digits is 13716864, while the sum is 62.

The spelling of 70723990988 in words is "seventy billion, seven hundred twenty-three million, nine hundred ninety thousand, nine hundred eighty-eight".