55405777722 has 32 divisors (see below), whose sum is σ = 111213053952. Its totient is φ = 18401721264.

The previous prime is 55405777717. The next prime is 55405777723. The reversal of 55405777722 is 22777750455.

55405777722 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (55405777723) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9956913 + ... + 9962475.

It is an arithmetic number, because the mean of its divisors is an integer number (3475407936).

Almost surely, 2^55405777722 is an apocalyptic number.

55405777722 is an abundant number, since it is smaller than the sum of its proper divisors (55807276230).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55405777722 is a wasteful number, since it uses less digits than its factorization.

55405777722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11282.

The product of its (nonzero) digits is 4802000, while the sum is 51.

The spelling of 55405777722 in words is "fifty-five billion, four hundred five million, seven hundred seventy-seven thousand, seven hundred twenty-two".