72151506655 has 8 divisors (see below), whose sum is σ = 86583669984. Its totient is φ = 57719964000.

The previous prime is 72151506631. The next prime is 72151506673. The reversal of 72151506655 is 55660515127.

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

It is not a de Polignac number, because 72151506655 - 2¹⁹ = 72150982367 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 (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158065 + ... + 411445.

It is an arithmetic number, because the mean of its divisors is an integer number (10822958748).

Almost surely, 2^72151506655 is an apocalyptic number.

72151506655 is a deficient number, since it is larger than the sum of its proper divisors (14432163329).

72151506655 is a wasteful number, since it uses less digits than its factorization.

72151506655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310337.

The product of its (nonzero) digits is 315000, while the sum is 43.

The spelling of 72151506655 in words is "seventy-two billion, one hundred fifty-one million, five hundred six thousand, six hundred fifty-five".