155379944664 has 96 divisors (see below), whose sum is σ = 501848305920. Its totient is φ = 42464081088.

The previous prime is 155379944663. The next prime is 155379944669. The reversal of 155379944664 is 466449973551.

It is a happy number.

155379944664 is a `hidden beast` number, since 1 + 5 + 537 + 9 + 94 + 4 + 6 + 6 + 4 = 666.

155379944664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155379944663) 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 23 ways as a sum of consecutive naturals, for example, 6690442 + ... + 6713625.

It is an arithmetic number, because the mean of its divisors is an integer number (5227586520).

Almost surely, 2^155379944664 is an apocalyptic number.

155379944664 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

155379944664 is an abundant number, since it is smaller than the sum of its proper divisors (346468361256).

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

155379944664 is a wasteful number, since it uses less digits than its factorization.

155379944664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13404109 (or 13404102 counting only the distinct ones).

The product of its digits is 97977600, while the sum is 63.

The spelling of 155379944664 in words is "one hundred fifty-five billion, three hundred seventy-nine million, nine hundred forty-four thousand, six hundred sixty-four".