155461565952 has 800 divisors, whose sum is σ = 586077845760. Its totient is φ = 39852933120.

The previous prime is 155461565887. The next prime is 155461565957. The reversal of 155461565952 is 259565164551.

155461565952 is a `hidden beast` number, since 1 + 5 + 5 + 46 + 1 + 5 + 6 + 595 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155461565957) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 284207343 + ... + 284207889.

Almost surely, 2^155461565952 is an apocalyptic number.

155461565952 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155461565952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (293038922880).

155461565952 is an abundant number, since it is smaller than the sum of its proper divisors (430616279808).

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

155461565952 is an equidigital number, since it uses as much as digits as its factorization.

155461565952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684 (or 659 counting only the distinct ones).

The product of its digits is 8100000, while the sum is 54.

The spelling of 155461565952 in words is "one hundred fifty-five billion, four hundred sixty-one million, five hundred sixty-five thousand, nine hundred fifty-two".