155265143664 has 80 divisors (see below), whose sum is σ = 412258390560. Its totient is φ = 50334535680.

The previous prime is 155265143653. The next prime is 155265143687. The reversal of 155265143664 is 466341562551.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37317 + ... + 558500.

It is an arithmetic number, because the mean of its divisors is an integer number (5153229882).

Almost surely, 2^155265143664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155265143664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (206129195280).

155265143664 is an abundant number, since it is smaller than the sum of its proper divisors (256993246896).

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

155265143664 is a wasteful number, since it uses less digits than its factorization.

155265143664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 595978 (or 595972 counting only the distinct ones).

The product of its digits is 2592000, while the sum is 48.

The spelling of 155265143664 in words is "one hundred fifty-five billion, two hundred sixty-five million, one hundred forty-three thousand, six hundred sixty-four".