77990341023 has 64 divisors (see below), whose sum is σ = 143066373120. Its totient is φ = 40968861696.

The previous prime is 77990341001. The next prime is 77990341027. The reversal of 77990341023 is 32014309977.

It is not a de Polignac number, because 77990341023 - 2¹⁴ = 77990324639 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 77990341023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77990341027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 144090 + ... + 420407.

It is an arithmetic number, because the mean of its divisors is an integer number (2235412080).

Almost surely, 2^77990341023 is an apocalyptic number.

77990341023 is a deficient number, since it is larger than the sum of its proper divisors (65076032097).

77990341023 is a wasteful number, since it uses less digits than its factorization.

77990341023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564573 (or 564567 counting only the distinct ones).

The product of its (nonzero) digits is 285768, while the sum is 45.

The spelling of 77990341023 in words is "seventy-seven billion, nine hundred ninety million, three hundred forty-one thousand, twenty-three".