72646171475605 has 64 divisors (see below), whose sum is σ = 108304832982528. Its totient is φ = 45548980024320.

The previous prime is 72646171475543. The next prime is 72646171475623. The reversal of 72646171475605 is 50657417164627.

It is not a de Polignac number, because 72646171475605 - 2²⁵ = 72646137921173 is a prime.

It is a super-3 number, since 3×72646171475605³ (a number of 43 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 631532995 + ... + 631648015.

It is an arithmetic number, because the mean of its divisors is an integer number (1692263015352).

Almost surely, 2^{72646171475605} is an apocalyptic number.

It is an amenable number.

72646171475605 is a deficient number, since it is larger than the sum of its proper divisors (35658661506923).

72646171475605 is a wasteful number, since it uses less digits than its factorization.

72646171475605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128126.

The product of its (nonzero) digits is 59270400, while the sum is 61.

The spelling of 72646171475605 in words is "seventy-two trillion, six hundred forty-six billion, one hundred seventy-one million, four hundred seventy-five thousand, six hundred five".