11957721062 has 16 divisors (see below), whose sum is σ = 20514499872. Its totient is φ = 5120850240.

The previous prime is 11957721049. The next prime is 11957721071. The reversal of 11957721062 is 26012775911.

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, 304793 + ... + 341780.

It is an arithmetic number, because the mean of its divisors is an integer number (1282156242).

Almost surely, 2^11957721062 is an apocalyptic number.

11957721062 is a deficient number, since it is larger than the sum of its proper divisors (8556778810).

11957721062 is a wasteful number, since it uses less digits than its factorization.

11957721062 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 647903.

The product of its (nonzero) digits is 52920, while the sum is 41.

The spelling of 11957721062 in words is "eleven billion, nine hundred fifty-seven million, seven hundred twenty-one thousand, sixty-two".