154300481721 has 27 divisors (see below), whose sum is σ = 224865344613. Its totient is φ = 101958023160.

The previous prime is 154300481681. The next prime is 154300481723. The reversal of 154300481721 is 127184003451.

The square root of 154300481721 is 392811.

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

154300481721 is a `hidden beast` number, since 1 + 543 + 0 + 0 + 48 + 1 + 72 + 1 = 666.

It is not a de Polignac number, because 154300481721 - 2³⁷ = 16861528249 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (154300481723) by changing a digit.

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, 149660476 + ... + 149661506.

Almost surely, 2^154300481721 is an apocalyptic number.

154300481721 is the 392811-st square number.

154300481721 is the 196406-th centered octagonal number.

It is an amenable number.

154300481721 is a deficient number, since it is larger than the sum of its proper divisors (70564862892).

154300481721 is an frugal number, since it uses more digits than its factorization.

154300481721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2322 (or 1161 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

Multiplying 154300481721 by its sum of digits (36), we get a square (5554817341956 = 2356866²).

The spelling of 154300481721 in words is "one hundred fifty-four billion, three hundred million, four hundred eighty-one thousand, seven hundred twenty-one".