72210136304555 has 8 divisors (see below), whose sum is σ = 86654425014144. Its totient is φ = 57766601411200.

The previous prime is 72210136304543. The next prime is 72210136304671. The reversal of 72210136304555 is 55540363101227.

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

It is not a de Polignac number, because 72210136304555 - 2³⁶ = 72141416827819 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 188243291 + ... + 188626500.

It is an arithmetic number, because the mean of its divisors is an integer number (10831803126768).

Almost surely, 2^{72210136304555} is an apocalyptic number.

72210136304555 is a deficient number, since it is larger than the sum of its proper divisors (14444288709589).

72210136304555 is a wasteful number, since it uses less digits than its factorization.

72210136304555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376908117.

The product of its (nonzero) digits is 756000, while the sum is 44.

The spelling of 72210136304555 in words is "seventy-two trillion, two hundred ten billion, one hundred thirty-six million, three hundred four thousand, five hundred fifty-five".