72206051651157 has 4 divisors (see below), whose sum is σ = 96274735534880. Its totient is φ = 48137367767436.

The previous prime is 72206051651137. The next prime is 72206051651159. The reversal of 72206051651157 is 75115615060227.

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 72206051651157 - 2⁷ = 72206051651029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72206051651159) 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, 12034341941857 + ... + 12034341941862.

It is an arithmetic number, because the mean of its divisors is an integer number (24068683883720).

Almost surely, 2^{72206051651157} is an apocalyptic number.

It is an amenable number.

72206051651157 is a deficient number, since it is larger than the sum of its proper divisors (24068683883723).

72206051651157 is a wasteful number, since it uses less digits than its factorization.

72206051651157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24068683883722.

The product of its (nonzero) digits is 882000, while the sum is 48.

The spelling of 72206051651157 in words is "seventy-two trillion, two hundred six billion, fifty-one million, six hundred fifty-one thousand, one hundred fifty-seven".