55178965436 has 24 divisors (see below), whose sum is σ = 110362938336. Its totient is φ = 23647055040.

The previous prime is 55178965409. The next prime is 55178965451. The reversal of 55178965436 is 63456987155.

It is a happy number.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 1078106 + ... + 1128126.

It is an arithmetic number, because the mean of its divisors is an integer number (4598455764).

Almost surely, 2^55178965436 is an apocalyptic number.

It is an amenable number.

55178965436 is an abundant number, since it is smaller than the sum of its proper divisors (55183972900).

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

55178965436 is a wasteful number, since it uses less digits than its factorization.

55178965436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89429 (or 89427 counting only the distinct ones).

The product of its digits is 27216000, while the sum is 59.

The spelling of 55178965436 in words is "fifty-five billion, one hundred seventy-eight million, nine hundred sixty-five thousand, four hundred thirty-six".