71918760492 has 30 divisors (see below), whose sum is σ = 188009846948. Its totient is φ = 23972920056.

The previous prime is 71918760481. The next prime is 71918760493. The reversal of 71918760492 is 29406781917.

71918760492 is a `hidden beast` number, since 7 + 1 + 91 + 8 + 7 + 60 + 492 = 666.

It is a super-2 number, since 2×71918760492² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (71918760493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 110985418 + ... + 110986065.

Almost surely, 2^71918760492 is an apocalyptic number.

It is an amenable number.

71918760492 is an abundant number, since it is smaller than the sum of its proper divisors (116091086456).

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

71918760492 is a wasteful number, since it uses less digits than its factorization.

71918760492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221971499 (or 221971488 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 54.

The spelling of 71918760492 in words is "seventy-one billion, nine hundred eighteen million, seven hundred sixty thousand, four hundred ninety-two".