55101781932 has 12 divisors (see below), whose sum is σ = 128570824536. Its totient is φ = 18367260640.

The previous prime is 55101781919. The next prime is 55101781949. The reversal of 55101781932 is 23918710155.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

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, 2295907569 + ... + 2295907592.

It is an arithmetic number, because the mean of its divisors is an integer number (10714235378).

Almost surely, 2^55101781932 is an apocalyptic number.

It is an amenable number.

55101781932 is an abundant number, since it is smaller than the sum of its proper divisors (73469042604).

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

55101781932 is a wasteful number, since it uses less digits than its factorization.

55101781932 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4591815168 (or 4591815166 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 42.

The spelling of 55101781932 in words is "fifty-five billion, one hundred one million, seven hundred eighty-one thousand, nine hundred thirty-two".