55405317077 has 16 divisors (see below), whose sum is σ = 62840522304. Its totient is φ = 48406512000.

The previous prime is 55405317047. The next prime is 55405317091. The reversal of 55405317077 is 77071350455.

It is not a de Polignac number, because 55405317077 - 2⁸ = 55405316821 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 (55405317047) 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 15 ways as a sum of consecutive naturals, for example, 886574 + ... + 947007.

It is an arithmetic number, because the mean of its divisors is an integer number (3927532644).

Almost surely, 2^55405317077 is an apocalyptic number.

It is an amenable number.

55405317077 is a deficient number, since it is larger than the sum of its proper divisors (7435205227).

55405317077 is a wasteful number, since it uses less digits than its factorization.

55405317077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1833700.

The product of its (nonzero) digits is 514500, while the sum is 44.

The spelling of 55405317077 in words is "fifty-five billion, four hundred five million, three hundred seventeen thousand, seventy-seven".