72154671710015 has 4 divisors (see below), whose sum is σ = 86585606052024. Its totient is φ = 57723737368008.

The previous prime is 72154671709973. The next prime is 72154671710063. The reversal of 72154671710015 is 51001717645127.

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 72154671710015 - 2¹⁰ = 72154671708991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7215467170997 + ... + 7215467171006.

It is an arithmetic number, because the mean of its divisors is an integer number (21646401513006).

Almost surely, 2^{72154671710015} is an apocalyptic number.

72154671710015 is a deficient number, since it is larger than the sum of its proper divisors (14430934342009).

72154671710015 is a wasteful number, since it uses less digits than its factorization.

72154671710015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14430934342008.

The product of its (nonzero) digits is 411600, while the sum is 47.

The spelling of 72154671710015 in words is "seventy-two trillion, one hundred fifty-four billion, six hundred seventy-one million, seven hundred ten thousand, fifteen".