55553751878 has 24 divisors (see below), whose sum is σ = 85532973024. Its totient is φ = 27061220160.

The previous prime is 55553751857. The next prime is 55553751923. The reversal of 55553751878 is 87815735555.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2453075 + ... + 2475617.

It is an arithmetic number, because the mean of its divisors is an integer number (3563873876).

Almost surely, 2^55553751878 is an apocalyptic number.

55553751878 is a deficient number, since it is larger than the sum of its proper divisors (29979221146).

55553751878 is a wasteful number, since it uses less digits than its factorization.

55553751878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23360 (or 23319 counting only the distinct ones).

The product of its digits is 29400000, while the sum is 59.

The spelling of 55553751878 in words is "fifty-five billion, five hundred fifty-three million, seven hundred fifty-one thousand, eight hundred seventy-eight".