55775750005278 has 40 divisors (see below), whose sum is σ = 125430183192072. Its totient is φ = 18524797820784.

The previous prime is 55775750005247. The next prime is 55775750005333. The reversal of 55775750005278 is 87250005757755.

55775750005278 is a `hidden beast` number, since 5 + 5 + 7 + 7 + 5 + 7 + 500 + 0 + 52 + 78 = 666.

It is a super-2 number, since 2×55775750005278² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 621425800 + ... + 621515547.

Almost surely, 2^{55775750005278} is an apocalyptic number.

55775750005278 is an abundant number, since it is smaller than the sum of its proper divisors (69654433186794).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55775750005278 is a wasteful number, since it uses less digits than its factorization.

55775750005278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1242941638 (or 1242941629 counting only the distinct ones).

The product of its (nonzero) digits is 120050000, while the sum is 63.

The spelling of 55775750005278 in words is "fifty-five trillion, seven hundred seventy-five billion, seven hundred fifty million, five thousand, two hundred seventy-eight".