172740514663 has 4 divisors (see below), whose sum is σ = 172743843888. Its totient is φ = 172737185440.

The previous prime is 172740514621. The next prime is 172740514669. The reversal of 172740514663 is 366415047271.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-172740514663 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 (172740514669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1585531 + ... + 1690972.

It is an arithmetic number, because the mean of its divisors is an integer number (43185960972).

Almost surely, 2^172740514663 is an apocalyptic number.

172740514663 is a deficient number, since it is larger than the sum of its proper divisors (3329225).

172740514663 is an equidigital number, since it uses as much as digits as its factorization.

172740514663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3329224.

The product of its (nonzero) digits is 846720, while the sum is 46.

The spelling of 172740514663 in words is "one hundred seventy-two billion, seven hundred forty million, five hundred fourteen thousand, six hundred sixty-three".