71957668930 has 32 divisors (see below), whose sum is σ = 148100524416. Its totient is φ = 24658980864.

The previous prime is 71957668919. The next prime is 71957668933. The reversal of 71957668930 is 3986675917.

It is a super-2 number, since 2×71957668930² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (71957668933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111679 + ... + 395458.

It is an arithmetic number, because the mean of its divisors is an integer number (4628141388).

Almost surely, 2^71957668930 is an apocalyptic number.

71957668930 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

71957668930 is an abundant number, since it is smaller than the sum of its proper divisors (76142855486).

71957668930 is a wasteful number, since it uses less digits than its factorization.

71957668930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509178.

The product of its (nonzero) digits is 17146080, while the sum is 61.

The spelling of 71957668930 in words is "seventy-one billion, nine hundred fifty-seven million, six hundred sixty-eight thousand, nine hundred thirty".