155591454144 has 112 divisors (see below), whose sum is σ = 474070899456. Its totient is φ = 44115302400.

The previous prime is 155591454133. The next prime is 155591454149. The reversal of 155591454144 is 441454195551.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a junction number, because it is equal to n+sod(n) for n = 155591454093 and 155591454102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155591454149) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 265797 + ... + 617924.

It is an arithmetic number, because the mean of its divisors is an integer number (4232775888).

Almost surely, 2^155591454144 is an apocalyptic number.

155591454144 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

155591454144 is an abundant number, since it is smaller than the sum of its proper divisors (318479445312).

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

155591454144 is a wasteful number, since it uses less digits than its factorization.

155591454144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 883874 (or 883864 counting only the distinct ones).

The product of its digits is 1440000, while the sum is 48.

The spelling of 155591454144 in words is "one hundred fifty-five billion, five hundred ninety-one million, four hundred fifty-four thousand, one hundred forty-four".