155264421516 has 12 divisors (see below), whose sum is σ = 362283650232. Its totient is φ = 51754807168.

The previous prime is 155264421503. The next prime is 155264421517. The reversal of 155264421516 is 615124462551.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (155264421517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6469350885 + ... + 6469350908.

It is an arithmetic number, because the mean of its divisors is an integer number (30190304186).

Almost surely, 2^155264421516 is an apocalyptic number.

It is an amenable number.

155264421516 is an abundant number, since it is smaller than the sum of its proper divisors (207019228716).

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

155264421516 is a wasteful number, since it uses less digits than its factorization.

155264421516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12938701800 (or 12938701798 counting only the distinct ones).

The product of its digits is 288000, while the sum is 42.

The spelling of 155264421516 in words is "one hundred fifty-five billion, two hundred sixty-four million, four hundred twenty-one thousand, five hundred sixteen".