155680449100 has 36 divisors (see below), whose sum is σ = 368538083928. Its totient is φ = 56611072000.

The previous prime is 155680449079. The next prime is 155680449161. The reversal of 155680449100 is 1944086551.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 70762741 + ... + 70764940.

It is an arithmetic number, because the mean of its divisors is an integer number (10237168998).

Almost surely, 2^155680449100 is an apocalyptic number.

155680449100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155680449100 is an abundant number, since it is smaller than the sum of its proper divisors (212857634828).

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

155680449100 is a wasteful number, since it uses less digits than its factorization.

155680449100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141527706 (or 141527699 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 43.

The spelling of 155680449100 in words is "one hundred fifty-five billion, six hundred eighty million, four hundred forty-nine thousand, one hundred".