155448569664 has 84 divisors (see below), whose sum is σ = 462067721024. Its totient is φ = 51816184704.

The previous prime is 155448569599. The next prime is 155448569681. The reversal of 155448569664 is 466965844551.

155448569664 is a `hidden beast` number, since 1 + 5 + 5 + 4 + 4 + 8 + 569 + 6 + 64 = 666.

It is a super-2 number, since 2×155448569664² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 4982152 + ... + 5013255.

Almost surely, 2^155448569664 is an apocalyptic number.

It is an amenable number.

155448569664 is an abundant number, since it is smaller than the sum of its proper divisors (306619151360).

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

155448569664 is an frugal number, since it uses more digits than its factorization.

155448569664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9995434 (or 9995412 counting only the distinct ones).

The product of its digits is 124416000, while the sum is 63.

The spelling of 155448569664 in words is "one hundred fifty-five billion, four hundred forty-eight million, five hundred sixty-nine thousand, six hundred sixty-four".