70155728788 has 24 divisors (see below), whose sum is σ = 125550673920. Its totient is φ = 34288993440.

The previous prime is 70155728777. The next prime is 70155728831. The reversal of 70155728788 is 88782755107.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 553108 + ... + 668011.

It is an arithmetic number, because the mean of its divisors is an integer number (5231278080).

Almost surely, 2^70155728788 is an apocalyptic number.

It is an amenable number.

70155728788 is a deficient number, since it is larger than the sum of its proper divisors (55394945132).

70155728788 is a wasteful number, since it uses less digits than its factorization.

70155728788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1221447 (or 1221445 counting only the distinct ones).

The product of its (nonzero) digits is 8780800, while the sum is 58.

The spelling of 70155728788 in words is "seventy billion, one hundred fifty-five million, seven hundred twenty-eight thousand, seven hundred eighty-eight".