155340204100 has 36 divisors (see below), whose sum is σ = 337912508500. Its totient is φ = 61984143360.

The previous prime is 155340204079. The next prime is 155340204109. The reversal of 155340204100 is 1402043551.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 20869847296 + 134470356804 = 144464^2 + 366702^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (155340204109) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1858125 + ... + 1939924.

Almost surely, 2^155340204100 is an apocalyptic number.

155340204100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155340204100 is an abundant number, since it is smaller than the sum of its proper divisors (182572304400).

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

155340204100 is a wasteful number, since it uses less digits than its factorization.

155340204100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3798472 (or 3798465 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 155340204100 its reverse (1402043551), we get a palindrome (156742247651).

The spelling of 155340204100 in words is "one hundred fifty-five billion, three hundred forty million, two hundred four thousand, one hundred".