155243202400 has 144 divisors (see below), whose sum is σ = 445244346288. Its totient is φ = 52109568000.

The previous prime is 155243202353. The next prime is 155243202427. The reversal of 155243202400 is 4202342551.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 564111 + ... + 792910.

It is an arithmetic number, because the mean of its divisors is an integer number (3091974627).

Almost surely, 2^155243202400 is an apocalyptic number.

155243202400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155243202400 is an abundant number, since it is smaller than the sum of its proper divisors (290001143888).

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

155243202400 is a wasteful number, since it uses less digits than its factorization.

155243202400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1357065 (or 1357052 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

Adding to 155243202400 its reverse (4202342551), we get a palindrome (159445544951).

The spelling of 155243202400 in words is "one hundred fifty-five billion, two hundred forty-three million, two hundred two thousand, four hundred".