65724271432 has 8 divisors (see below), whose sum is σ = 123233008950. Its totient is φ = 32862135712.

The previous prime is 65724271427. The next prime is 65724271493. The reversal of 65724271432 is 23417242756.

It can be written as a sum of positive squares in only one way, i.e., 45499449636 + 20224821796 = 213306^2 + 142214^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×65724271432² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 4107766957 + ... + 4107766972.

Almost surely, 2^65724271432 is an apocalyptic number.

It is an amenable number.

65724271432 is a deficient number, since it is larger than the sum of its proper divisors (57508737518).

65724271432 is a wasteful number, since it uses less digits than its factorization.

65724271432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8215533935 (or 8215533931 counting only the distinct ones).

The product of its digits is 564480, while the sum is 43.

The spelling of 65724271432 in words is "sixty-five billion, seven hundred twenty-four million, two hundred seventy-one thousand, four hundred thirty-two".