72667174105051 has 4 divisors (see below), whose sum is σ = 72793113748792. Its totient is φ = 72541234461312.

The previous prime is 72667174104979. The next prime is 72667174105061. The reversal of 72667174105051 is 15050147176627.

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

It is a cyclic number.

It is not a de Polignac number, because 72667174105051 - 2³⁵ = 72632814366683 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72667174105051.

It is not an unprimeable number, because it can be changed into a prime (72667174105061) 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, 62969821005 + ... + 62969822158.

It is an arithmetic number, because the mean of its divisors is an integer number (18198278437198).

Almost surely, 2^{72667174105051} is an apocalyptic number.

72667174105051 is a deficient number, since it is larger than the sum of its proper divisors (125939643741).

72667174105051 is a wasteful number, since it uses less digits than its factorization.

72667174105051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125939643740.

The product of its (nonzero) digits is 2469600, while the sum is 52.

The spelling of 72667174105051 in words is "seventy-two trillion, six hundred sixty-seven billion, one hundred seventy-four million, one hundred five thousand, fifty-one".