55766405390 has 8 divisors (see below), whose sum is σ = 100379529720. Its totient is φ = 22306562152.

The previous prime is 55766405363. The next prime is 55766405399. The reversal of 55766405390 is 9350466755.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55766405399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2788320260 + ... + 2788320279.

It is an arithmetic number, because the mean of its divisors is an integer number (12547441215).

Almost surely, 2^55766405390 is an apocalyptic number.

55766405390 is a deficient number, since it is larger than the sum of its proper divisors (44613124330).

55766405390 is a wasteful number, since it uses less digits than its factorization.

55766405390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5576640546.

The product of its (nonzero) digits is 3402000, while the sum is 50.

The spelling of 55766405390 in words is "fifty-five billion, seven hundred sixty-six million, four hundred five thousand, three hundred ninety".