76747952100639 has 4 divisors (see below), whose sum is σ = 102330602800856. Its totient is φ = 51165301400424.

The previous prime is 76747952100637. The next prime is 76747952100643. The reversal of 76747952100639 is 93600125974767.

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

It is not a de Polignac number, because 76747952100639 - 2¹ = 76747952100637 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 76747952100639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76747952100637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12791325350104 + ... + 12791325350109.

It is an arithmetic number, because the mean of its divisors is an integer number (25582650700214).

Almost surely, 2^{76747952100639} is an apocalyptic number.

76747952100639 is a deficient number, since it is larger than the sum of its proper divisors (25582650700217).

76747952100639 is a wasteful number, since it uses less digits than its factorization.

76747952100639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25582650700216.

The product of its (nonzero) digits is 120022560, while the sum is 66.

The spelling of 76747952100639 in words is "seventy-six trillion, seven hundred forty-seven billion, nine hundred fifty-two million, one hundred thousand, six hundred thirty-nine".