55537778022 has 16 divisors (see below), whose sum is σ = 111092316480. Its totient is φ = 18509799272.

The previous prime is 55537778003. The next prime is 55537778029. The reversal of 55537778022 is 22087773555.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55537778029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 655068 + ... + 734975.

It is an arithmetic number, because the mean of its divisors is an integer number (6943269780).

Almost surely, 2^55537778022 is an apocalyptic number.

55537778022 is an abundant number, since it is smaller than the sum of its proper divisors (55554538458).

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

55537778022 is a wasteful number, since it uses less digits than its factorization.

55537778022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1396707.

The product of its (nonzero) digits is 4116000, while the sum is 51.

The spelling of 55537778022 in words is "fifty-five billion, five hundred thirty-seven million, seven hundred seventy-eight thousand, twenty-two".