70732117728 has 48 divisors (see below), whose sum is σ = 206302012560. Its totient is φ = 23577372288.

The previous prime is 70732117681. The next prime is 70732117733. The reversal of 70732117728 is 82771123707.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40932075 + ... + 40933802.

It is an arithmetic number, because the mean of its divisors is an integer number (4297958595).

Almost surely, 2^70732117728 is an apocalyptic number.

It is an amenable number.

70732117728 is an abundant number, since it is smaller than the sum of its proper divisors (135569894832).

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

70732117728 is a wasteful number, since it uses less digits than its factorization.

70732117728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81865896 (or 81865882 counting only the distinct ones).

The product of its (nonzero) digits is 230496, while the sum is 45.

The spelling of 70732117728 in words is "seventy billion, seven hundred thirty-two million, one hundred seventeen thousand, seven hundred twenty-eight".