155324132400 has 120 divisors (see below), whose sum is σ = 501353607744. Its totient is φ = 41103545600.

The previous prime is 155324132399. The next prime is 155324132401. The reversal of 155324132400 is 4231423551.

It is an interprime number because it is at equal distance from previous prime (155324132399) and next prime (155324132401).

It is a tau number, because it is divible by the number of its divisors (120).

It is a super-2 number, since 2×155324132400² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (155324132401) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 336834 + ... + 651233.

Almost surely, 2^155324132400 is an apocalyptic number.

155324132400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155324132400 is an abundant number, since it is smaller than the sum of its proper divisors (346029475344).

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

155324132400 is a wasteful number, since it uses less digits than its factorization.

155324132400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 988219 (or 988208 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 155324132400 its reverse (4231423551), we get a palindrome (159555555951).

The spelling of 155324132400 in words is "one hundred fifty-five billion, three hundred twenty-four million, one hundred thirty-two thousand, four hundred".