8957721011738 has 4 divisors (see below), whose sum is σ = 13436581517610. Its totient is φ = 4478860505868.

The previous prime is 8957721011719. The next prime is 8957721011791. The reversal of 8957721011738 is 8371101277598.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 8901588503809 + 56132507929 = 2983553^2 + 236923^2 .

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 as a sum of consecutive naturals, namely, 2239430252933 + ... + 2239430252936.

Almost surely, 2^{8957721011738} is an apocalyptic number.

8957721011738 is a deficient number, since it is larger than the sum of its proper divisors (4478860505872).

8957721011738 is a wasteful number, since it uses less digits than its factorization.

8957721011738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4478860505871.

The product of its (nonzero) digits is 5927040, while the sum is 59.

The spelling of 8957721011738 in words is "eight trillion, nine hundred fifty-seven billion, seven hundred twenty-one million, eleven thousand, seven hundred thirty-eight".