55703286778 has 16 divisors (see below), whose sum is σ = 83683189800. Its totient is φ = 27808923136.

The previous prime is 55703286767. The next prime is 55703286781. The reversal of 55703286778 is 87768230755.

It can be written as a sum of positive squares in 4 ways, for example, as 55369384249 + 333902529 = 235307^2 + 18273^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4132626 + ... + 4146082.

Almost surely, 2^55703286778 is an apocalyptic number.

55703286778 is a deficient number, since it is larger than the sum of its proper divisors (27979903022).

55703286778 is a wasteful number, since it uses less digits than its factorization.

55703286778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16481.

The product of its (nonzero) digits is 19756800, while the sum is 58.

The spelling of 55703286778 in words is "fifty-five billion, seven hundred three million, two hundred eighty-six thousand, seven hundred seventy-eight".