55736256778 has 8 divisors (see below), whose sum is σ = 84611667168. Its totient is φ = 27532367724.

The previous prime is 55736256769. The next prime is 55736256787. The reversal of 55736256778 is 87765263755.

It is an interprime number because it is at equal distance from previous prime (55736256769) and next prime (55736256787).

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 167880126 + ... + 167880457.

It is an arithmetic number, because the mean of its divisors is an integer number (10576458396).

Almost surely, 2^55736256778 is an apocalyptic number.

55736256778 is a deficient number, since it is larger than the sum of its proper divisors (28875410390).

55736256778 is a wasteful number, since it uses less digits than its factorization.

55736256778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335760668.

The product of its digits is 74088000, while the sum is 61.

The spelling of 55736256778 in words is "fifty-five billion, seven hundred thirty-six million, two hundred fifty-six thousand, seven hundred seventy-eight".