55502780530278 has 16 divisors (see below), whose sum is σ = 111012261661440. Its totient is φ = 18499810076616.

The previous prime is 55502780530261. The next prime is 55502780530297. The reversal of 55502780530278 is 87203508720555.

It is a congruent number.

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, 279084018 + ... + 279282821.

It is an arithmetic number, because the mean of its divisors is an integer number (6938266353840).

Almost surely, 2^{55502780530278} is an apocalyptic number.

55502780530278 is an abundant number, since it is smaller than the sum of its proper divisors (55509481131162).

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

55502780530278 is a wasteful number, since it uses less digits than its factorization.

55502780530278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558383411.

The product of its (nonzero) digits is 23520000, while the sum is 57.

The spelling of 55502780530278 in words is "fifty-five trillion, five hundred two billion, seven hundred eighty million, five hundred thirty thousand, two hundred seventy-eight".