71797268844 has 36 divisors (see below), whose sum is σ = 207414332944. Its totient is φ = 20513505312.

The previous prime is 71797268791. The next prime is 71797268849. The reversal of 71797268844 is 44886279717.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×71797268844² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (71797268849) 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 11 ways as a sum of consecutive naturals, for example, 142454647 + ... + 142455150.

Almost surely, 2^71797268844 is an apocalyptic number.

It is an amenable number.

71797268844 is an abundant number, since it is smaller than the sum of its proper divisors (135617064100).

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

71797268844 is a wasteful number, since it uses less digits than its factorization.

71797268844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284909814 (or 284909809 counting only the distinct ones).

The product of its digits is 37933056, while the sum is 63.

The spelling of 71797268844 in words is "seventy-one billion, seven hundred ninety-seven million, two hundred sixty-eight thousand, eight hundred forty-four".