72325307720434 has 4 divisors (see below), whose sum is σ = 108487961580654. Its totient is φ = 36162653860216.

The previous prime is 72325307720423. The next prime is 72325307720447. The reversal of 72325307720434 is 43402770352327.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 57824085766225 + 14501221954209 = 7604215^2 + 3808047^2 .

It is a super-2 number, since 2×72325307720434² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18081326930107 + ... + 18081326930110.

Almost surely, 2^{72325307720434} is an apocalyptic number.

72325307720434 is a deficient number, since it is larger than the sum of its proper divisors (36162653860220).

72325307720434 is a wasteful number, since it uses less digits than its factorization.

72325307720434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36162653860219.

The product of its (nonzero) digits is 5927040, while the sum is 49.

The spelling of 72325307720434 in words is "seventy-two trillion, three hundred twenty-five billion, three hundred seven million, seven hundred twenty thousand, four hundred thirty-four".