72646171445071 has 16 divisors (see below), whose sum is σ = 83554128779776. Its totient is φ = 61870707920736.

The previous prime is 72646171445011. The next prime is 72646171445087. The reversal of 72646171445071 is 17054417164627.

It is a cyclic number.

It is not a de Polignac number, because 72646171445071 - 2⁹ = 72646171444559 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72646171445011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90340840 + ... + 91141426.

It is an arithmetic number, because the mean of its divisors is an integer number (5222133048736).

Almost surely, 2^{72646171445071} is an apocalyptic number.

72646171445071 is a deficient number, since it is larger than the sum of its proper divisors (10907957334705).

72646171445071 is a wasteful number, since it uses less digits than its factorization.

72646171445071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 883318.

The product of its (nonzero) digits is 7902720, while the sum is 55.

The spelling of 72646171445071 in words is "seventy-two trillion, six hundred forty-six billion, one hundred seventy-one million, four hundred forty-five thousand, seventy-one".