72655175625121 has 4 divisors (see below), whose sum is σ = 72666438253744. Its totient is φ = 72643912996500.

The previous prime is 72655175625113. The next prime is 72655175625143. The reversal of 72655175625121 is 12152657155627.

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 72655175625121 - 2³ = 72655175625113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72655175625421) 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, 5631304635 + ... + 5631317536.

It is an arithmetic number, because the mean of its divisors is an integer number (18166609563436).

Almost surely, 2^{72655175625121} is an apocalyptic number.

It is an amenable number.

72655175625121 is a deficient number, since it is larger than the sum of its proper divisors (11262628623).

72655175625121 is a wasteful number, since it uses less digits than its factorization.

72655175625121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11262628622.

The product of its digits is 8820000, while the sum is 55.

The spelling of 72655175625121 in words is "seventy-two trillion, six hundred fifty-five billion, one hundred seventy-five million, six hundred twenty-five thousand, one hundred twenty-one".