72150072215 has 32 divisors (see below), whose sum is σ = 98879792256. Its totient is φ = 50067210240.

The previous prime is 72150072139. The next prime is 72150072221. The reversal of 72150072215 is 51227005127.

It is a de Polignac number, because none of the positive numbers 2^k-72150072215 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 657374 + ... + 759236.

It is an arithmetic number, because the mean of its divisors is an integer number (3089993508).

Almost surely, 2^72150072215 is an apocalyptic number.

72150072215 is a deficient number, since it is larger than the sum of its proper divisors (26729720041).

72150072215 is a wasteful number, since it uses less digits than its factorization.

72150072215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102539.

The product of its (nonzero) digits is 9800, while the sum is 32.

The spelling of 72150072215 in words is "seventy-two billion, one hundred fifty million, seventy-two thousand, two hundred fifteen".