761665317625 has 64 divisors (see below), whose sum is σ = 1020232512000. Its totient is φ = 566231212800.

The previous prime is 761665317619. The next prime is 761665317659. The reversal of 761665317625 is 526713566167.

It is not a de Polignac number, because 761665317625 - 2⁹ = 761665317113 is a prime.

It is a hoax number, since the sum of its digits (55) coincides with the sum of the digits of its distinct prime factors.

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, 75414826 + ... + 75424924.

It is an arithmetic number, because the mean of its divisors is an integer number (15941133000).

Almost surely, 2^761665317625 is an apocalyptic number.

It is an amenable number.

761665317625 is a deficient number, since it is larger than the sum of its proper divisors (258567194375).

761665317625 is a wasteful number, since it uses less digits than its factorization.

761665317625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10883 (or 10873 counting only the distinct ones).

The product of its digits is 9525600, while the sum is 55.

It can be divided in two parts, 7616653 and 17625, that added together give a triangular number (7634278 = T₃₉₀₇).

The spelling of 761665317625 in words is "seven hundred sixty-one billion, six hundred sixty-five million, three hundred seventeen thousand, six hundred twenty-five".