71911274112 has 48 divisors (see below), whose sum is σ = 206932185330. Its totient is φ = 23970424320.

The previous prime is 71911274111. The next prime is 71911274173. The reversal of 71911274112 is 21147211917.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 50344589376 + 21566684736 = 224376^2 + 146856^2 .

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

It is a super-2 number, since 2×71911274112² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (71911274111) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 31210339 + ... + 31212642.

Almost surely, 2^71911274112 is an apocalyptic number.

71911274112 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

71911274112 is an abundant number, since it is smaller than the sum of its proper divisors (135020911218).

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

71911274112 is a wasteful number, since it uses less digits than its factorization.

71911274112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62423001 (or 62422986 counting only the distinct ones).

The product of its digits is 7056, while the sum is 36.

The spelling of 71911274112 in words is "seventy-one billion, nine hundred eleven million, two hundred seventy-four thousand, one hundred twelve".