77313616623 has 36 divisors (see below), whose sum is σ = 121664382528. Its totient is φ = 47254440960.

The previous prime is 77313616609. The next prime is 77313616637. The reversal of 77313616623 is 32661631377.

It is a happy number.

77313616623 is a `hidden beast` number, since 7 + 7 + 3 + 1 + 3 + 6 + 16 + 623 = 666.

It is an interprime number because it is at equal distance from previous prime (77313616609) and next prime (77313616637).

It is not a de Polignac number, because 77313616623 - 2¹⁶ = 77313551087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77313616663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 283090 + ... + 484527.

Almost surely, 2^77313616623 is an apocalyptic number.

77313616623 is a deficient number, since it is larger than the sum of its proper divisors (44350765905).

77313616623 is a wasteful number, since it uses less digits than its factorization.

77313616623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 767692 (or 767670 counting only the distinct ones).

The product of its digits is 571536, while the sum is 45.

The spelling of 77313616623 in words is "seventy-seven billion, three hundred thirteen million, six hundred sixteen thousand, six hundred twenty-three".