155374378200 has 120 divisors (see below), whose sum is σ = 539638290180. Its totient is φ = 41433163200.

The previous prime is 155374378193. The next prime is 155374378231. The reversal of 155374378200 is 2873473551.

155374378200 is a `hidden beast` number, since 1 + 5 + 5 + 3 + 7 + 437 + 8 + 200 = 666.

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

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 4779306 + ... + 4811705.

Almost surely, 2^155374378200 is an apocalyptic number.

155374378200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155374378200 is an abundant number, since it is smaller than the sum of its proper divisors (384263911980).

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

155374378200 is a wasteful number, since it uses less digits than its factorization.

155374378200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9591039 (or 9591021 counting only the distinct ones).

The product of its (nonzero) digits is 705600, while the sum is 45.

The spelling of 155374378200 in words is "one hundred fifty-five billion, three hundred seventy-four million, three hundred seventy-eight thousand, two hundred".