55206542620 has 12 divisors (see below), whose sum is σ = 115933739544. Its totient is φ = 22082617040.

The previous prime is 55206542609. The next prime is 55206542621. The reversal of 55206542620 is 2624560255.

It is a self number, because there is not a number n which added to its sum of digits gives 55206542620.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55206542621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1380163546 + ... + 1380163585.

It is an arithmetic number, because the mean of its divisors is an integer number (9661144962).

Almost surely, 2^55206542620 is an apocalyptic number.

It is an amenable number.

55206542620 is an abundant number, since it is smaller than the sum of its proper divisors (60727196924).

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

55206542620 is a wasteful number, since it uses less digits than its factorization.

55206542620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2760327140 (or 2760327138 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 37.

The spelling of 55206542620 in words is "fifty-five billion, two hundred six million, five hundred forty-two thousand, six hundred twenty".