71457512732 has 12 divisors (see below), whose sum is σ = 125587346976. Its totient is φ = 35575413600.

The previous prime is 71457512719. The next prime is 71457512741. The reversal of 71457512732 is 23721575417.

It is a super-2 number, since 2×71457512732² (a number of 23 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38334644 + ... + 38336507.

It is an arithmetic number, because the mean of its divisors is an integer number (10465612248).

Almost surely, 2^71457512732 is an apocalyptic number.

It is an amenable number.

71457512732 is a deficient number, since it is larger than the sum of its proper divisors (54129834244).

71457512732 is a wasteful number, since it uses less digits than its factorization.

71457512732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76671388 (or 76671386 counting only the distinct ones).

The product of its digits is 411600, while the sum is 44.

The spelling of 71457512732 in words is "seventy-one billion, four hundred fifty-seven million, five hundred twelve thousand, seven hundred thirty-two".