77355255377 has 4 divisors (see below), whose sum is σ = 77356326720. Its totient is φ = 77354184036.

The previous prime is 77355255311. The next prime is 77355255403.

77355255377 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 77355255377 - 2¹⁴ = 77355238993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77355755377) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 418877 + ... + 574602.

It is an arithmetic number, because the mean of its divisors is an integer number (19339081680).

Almost surely, 2^77355255377 is an apocalyptic number.

It is an amenable number.

77355255377 is a deficient number, since it is larger than the sum of its proper divisors (1071343).

77355255377 is an equidigital number, since it uses as much as digits as its factorization.

77355255377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1071342.

The product of its digits is 27011250, while the sum is 56.

The spelling of 77355255377 in words is "seventy-seven billion, three hundred fifty-five million, two hundred fifty-five thousand, three hundred seventy-seven".