72707671388 has 24 divisors (see below), whose sum is σ = 138819671424. Its totient is φ = 33045580400.

The previous prime is 72707671373. The next prime is 72707671411. The reversal of 72707671388 is 88317670727.

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, 382643 + ... + 540213.

It is an arithmetic number, because the mean of its divisors is an integer number (5784152976).

Almost surely, 2^72707671388 is an apocalyptic number.

It is an amenable number.

72707671388 is a deficient number, since it is larger than the sum of its proper divisors (66112000036).

72707671388 is a wasteful number, since it uses less digits than its factorization.

72707671388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168073 (or 168071 counting only the distinct ones).

The product of its (nonzero) digits is 5531904, while the sum is 56.

The spelling of 72707671388 in words is "seventy-two billion, seven hundred seven million, six hundred seventy-one thousand, three hundred eighty-eight".