55773011777 has 4 divisors (see below), whose sum is σ = 63740584896. Its totient is φ = 47805438660.

The previous prime is 55773011761. The next prime is 55773011779. The reversal of 55773011777 is 77711037755.

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 not a de Polignac number, because 55773011777 - 2⁴ = 55773011761 is a prime.

It is a super-2 number, since 2×55773011777² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55773011779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3983786549 + ... + 3983786562.

It is an arithmetic number, because the mean of its divisors is an integer number (15935146224).

Almost surely, 2^55773011777 is an apocalyptic number.

It is an amenable number.

55773011777 is a deficient number, since it is larger than the sum of its proper divisors (7967573119).

55773011777 is an equidigital number, since it uses as much as digits as its factorization.

55773011777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7967573118.

The product of its (nonzero) digits is 1260525, while the sum is 50.

The spelling of 55773011777 in words is "fifty-five billion, seven hundred seventy-three million, eleven thousand, seven hundred seventy-seven".