172213025027668 has 48 divisors (see below), whose sum is σ = 323960752281600. Its totient is φ = 79816416132096.

The previous prime is 172213025027657. The next prime is 172213025027717. The reversal of 172213025027668 is 866720520312271.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71595318 + ... + 73961581.

It is an arithmetic number, because the mean of its divisors is an integer number (6749182339200).

Almost surely, 2^{172213025027668} is an apocalyptic number.

It is an amenable number.

172213025027668 is a deficient number, since it is larger than the sum of its proper divisors (151747727253932).

172213025027668 is a wasteful number, since it uses less digits than its factorization.

172213025027668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145557184 (or 145557182 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 52.

The spelling of 172213025027668 in words is "one hundred seventy-two trillion, two hundred thirteen billion, twenty-five million, twenty-seven thousand, six hundred sixty-eight".