72215857151 has 8 divisors (see below), whose sum is σ = 74182376400. Its totient is φ = 70250113728.

The previous prime is 72215857111. The next prime is 72215857169. The reversal of 72215857151 is 15175851227.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72215857151 - 2²² = 72211662847 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 (72215857111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2726 + ... + 380051.

It is an arithmetic number, because the mean of its divisors is an integer number (9272797050).

Almost surely, 2^72215857151 is an apocalyptic number.

72215857151 is a deficient number, since it is larger than the sum of its proper divisors (1966519249).

72215857151 is a wasteful number, since it uses less digits than its factorization.

72215857151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387913.

The product of its digits is 196000, while the sum is 44.

The spelling of 72215857151 in words is "seventy-two billion, two hundred fifteen million, eight hundred fifty-seven thousand, one hundred fifty-one".