72732124461 has 4 divisors (see below), whose sum is σ = 96976165952. Its totient is φ = 48488082972.

The previous prime is 72732124457. The next prime is 72732124477. The reversal of 72732124461 is 16442123727.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 72732124461 - 2² = 72732124457 is a prime.

It is a super-2 number, since 2×72732124461² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72732125461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12122020741 + ... + 12122020746.

It is an arithmetic number, because the mean of its divisors is an integer number (24244041488).

Almost surely, 2^72732124461 is an apocalyptic number.

It is an amenable number.

72732124461 is a deficient number, since it is larger than the sum of its proper divisors (24244041491).

72732124461 is a wasteful number, since it uses less digits than its factorization.

72732124461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24244041490.

The product of its digits is 112896, while the sum is 39.

The spelling of 72732124461 in words is "seventy-two billion, seven hundred thirty-two million, one hundred twenty-four thousand, four hundred sixty-one".