77864999946877 has 32 divisors (see below), whose sum is σ = 95548552033536. Its totient is φ = 62439116889600.

The previous prime is 77864999946817. The next prime is 77864999946893.

77864999946877 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 77864999946877 - 2⁷ = 77864999946749 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 (77864999946817) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8235648 + ... + 14951785.

It is an arithmetic number, because the mean of its divisors is an integer number (2985892251048).

Almost surely, 2^{77864999946877} is an apocalyptic number.

It is an amenable number.

77864999946877 is a deficient number, since it is larger than the sum of its proper divisors (17683552086659).

77864999946877 is a wasteful number, since it uses less digits than its factorization.

77864999946877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23188501.

The product of its digits is 580717154304, while the sum is 100.

The spelling of 77864999946877 in words is "seventy-seven trillion, eight hundred sixty-four billion, nine hundred ninety-nine million, nine hundred forty-six thousand, eight hundred seventy-seven".