72674711261 has 4 divisors (see below), whose sum is σ = 73759408512. Its totient is φ = 71590014012.

The previous prime is 72674711243. The next prime is 72674711269. The reversal of 72674711261 is 16211747627.

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 a cyclic number.

It is not a de Polignac number, because 72674711261 - 2¹⁴ = 72674694877 is a prime.

It is a super-2 number, since 2×72674711261² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72674711269) 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, 542348525 + ... + 542348658.

It is an arithmetic number, because the mean of its divisors is an integer number (18439852128).

Almost surely, 2^72674711261 is an apocalyptic number.

It is an amenable number.

72674711261 is a deficient number, since it is larger than the sum of its proper divisors (1084697251).

72674711261 is a wasteful number, since it uses less digits than its factorization.

72674711261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1084697250.

The product of its digits is 197568, while the sum is 44.

The spelling of 72674711261 in words is "seventy-two billion, six hundred seventy-four million, seven hundred eleven thousand, two hundred sixty-one".