77277743055401 has 24 divisors (see below), whose sum is σ = 91169705422944. Its totient is φ = 65299324668480.

The previous prime is 77277743055377. The next prime is 77277743055431. The reversal of 77277743055401 is 10455034777277.

It is not a de Polignac number, because 77277743055401 - 2¹⁴ = 77277743039017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77277743055431) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2265086 + ... + 12636696.

It is an arithmetic number, because the mean of its divisors is an integer number (3798737725956).

Almost surely, 2^{77277743055401} is an apocalyptic number.

It is an amenable number.

77277743055401 is a deficient number, since it is larger than the sum of its proper divisors (13891962367543).

77277743055401 is a wasteful number, since it uses less digits than its factorization.

77277743055401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10373781 (or 10373774 counting only the distinct ones).

The product of its (nonzero) digits is 40336800, while the sum is 59.

The spelling of 77277743055401 in words is "seventy-seven trillion, two hundred seventy-seven billion, seven hundred forty-three million, fifty-five thousand, four hundred one".