155522151564 has 96 divisors (see below), whose sum is σ = 395524926720. Its totient is φ = 47276759808.

The previous prime is 155522151563. The next prime is 155522151593. The reversal of 155522151564 is 465151225551.

It is a happy number.

155522151564 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 (155522151563) 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 31 ways as a sum of consecutive naturals, for example, 6213627 + ... + 6238605.

It is an arithmetic number, because the mean of its divisors is an integer number (4120051320).

Almost surely, 2^155522151564 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 155522151564, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (197762463360).

155522151564 is an abundant number, since it is smaller than the sum of its proper divisors (240002775156).

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

155522151564 is a wasteful number, since it uses less digits than its factorization.

155522151564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25479 (or 25477 counting only the distinct ones).

The product of its digits is 300000, while the sum is 42.

The spelling of 155522151564 in words is "one hundred fifty-five billion, five hundred twenty-two million, one hundred fifty-one thousand, five hundred sixty-four".