154449467172900 has 81 divisors (see below), whose sum is σ = 484114442954961. Its totient is φ = 41186425157280.

The previous prime is 154449467172887. The next prime is 154449467173003. The reversal of 154449467172900 is 9271764944451.

It is a happy number.

The square root of 154449467172900 is 12427770.

It is a perfect power (a square), and thus also a powerful number.

154449467172900 is a `hidden beast` number, since 1 + 5 + 4 + 4 + 494 + 6 + 71 + 72 + 9 + 0 + 0 = 666.

It can be written as a sum of positive squares in only one way, i.e., 55601808182244 + 98847658990656 = 7456662^2 + 9942216^2 .

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 26 ways as a sum of consecutive naturals, for example, 372625971 + ... + 373040229.

Almost surely, 2^{154449467172900} is an apocalyptic number.

154449467172900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

154449467172900 is the 12427770-th square number.

It is an amenable number.

154449467172900 is an abundant number, since it is smaller than the sum of its proper divisors (329664975782061).

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

154449467172900 is an frugal number, since it uses more digits than its factorization.

154449467172900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 828538 (or 414269 counting only the distinct ones).

The product of its (nonzero) digits is 60963840, while the sum is 63.

The spelling of 154449467172900 in words is "one hundred fifty-four trillion, four hundred forty-nine billion, four hundred sixty-seven million, one hundred seventy-two thousand, nine hundred".