55562562563820 has 192 divisors, whose sum is σ = 169460603673984. Its totient is φ = 13520773324800.

The previous prime is 55562562563789. The next prime is 55562562563861. The reversal of 55562562563820 is 2836526526555.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 50903304 + ... + 51983376.

It is an arithmetic number, because the mean of its divisors is an integer number (882607310802).

Almost surely, 2^{55562562563820} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55562562563820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84730301836992).

55562562563820 is an abundant number, since it is smaller than the sum of its proper divisors (113898041110164).

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

55562562563820 is a wasteful number, since it uses less digits than its factorization.

55562562563820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1080852 (or 1080850 counting only the distinct ones).

The product of its (nonzero) digits is 129600000, while the sum is 60.

The spelling of 55562562563820 in words is "fifty-five trillion, five hundred sixty-two billion, five hundred sixty-two million, five hundred sixty-three thousand, eight hundred twenty".