55406939379 has 16 divisors (see below), whose sum is σ = 80603994240. Its totient is φ = 33574928960.

The previous prime is 55406939333. The next prime is 55406939431. The reversal of 55406939379 is 97393960455.

It is a cyclic number.

It is not a de Polignac number, because 55406939379 - 2³⁵ = 21047201011 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55406939279) 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, 103852 + ... + 348710.

It is an arithmetic number, because the mean of its divisors is an integer number (5037749640).

Almost surely, 2^55406939379 is an apocalyptic number.

55406939379 is a deficient number, since it is larger than the sum of its proper divisors (25197054861).

55406939379 is a wasteful number, since it uses less digits than its factorization.

55406939379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251730.

The product of its (nonzero) digits is 27556200, while the sum is 60.

The spelling of 55406939379 in words is "fifty-five billion, four hundred six million, nine hundred thirty-nine thousand, three hundred seventy-nine".