71106400491 has 32 divisors (see below), whose sum is σ = 111086750208. Its totient is φ = 39608559360.

The previous prime is 71106400487. The next prime is 71106400499. The reversal of 71106400491 is 19400460117.

It is not a de Polignac number, because 71106400491 - 2² = 71106400487 is a prime.

It is a super-2 number, since 2×71106400491² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (71106400499) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1031676 + ... + 1098438.

It is an arithmetic number, because the mean of its divisors is an integer number (3471460944).

Almost surely, 2^71106400491 is an apocalyptic number.

71106400491 is a deficient number, since it is larger than the sum of its proper divisors (39980349717).

71106400491 is a wasteful number, since it uses less digits than its factorization.

71106400491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68051.

The product of its (nonzero) digits is 6048, while the sum is 33.

The spelling of 71106400491 in words is "seventy-one billion, one hundred six million, four hundred thousand, four hundred ninety-one".