55134780164 has 24 divisors (see below), whose sum is σ = 99987888000. Its totient is φ = 26570144160.

The previous prime is 55134780161. The next prime is 55134780191. The reversal of 55134780164 is 46108743155.

55134780164 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (55134780161) 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, 349964 + ... + 482435.

It is an arithmetic number, because the mean of its divisors is an integer number (4166162000).

Almost surely, 2^55134780164 is an apocalyptic number.

It is an amenable number.

55134780164 is a deficient number, since it is larger than the sum of its proper divisors (44853107836).

55134780164 is a wasteful number, since it uses less digits than its factorization.

55134780164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 833003 (or 833001 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 44.

The spelling of 55134780164 in words is "fifty-five billion, one hundred thirty-four million, seven hundred eighty thousand, one hundred sixty-four".