154795820481 has 27 divisors (see below), whose sum is σ = 224847228099. Its totient is φ = 102622002912.

The previous prime is 154795820479. The next prime is 154795820489. The reversal of 154795820481 is 184028597451.

The square root of 154795820481 is 393441.

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

154795820481 is a `hidden beast` number, since 1 + 54 + 7 + 9 + 582 + 0 + 4 + 8 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 987530625 + 153808289856 = 31425^2 + 392184^2 .

It is not a de Polignac number, because 154795820481 - 2¹ = 154795820479 is a prime.

It is a super-3 number, since 3×154795820481³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (154795820489) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 369440890 + ... + 369441308.

Almost surely, 2^154795820481 is an apocalyptic number.

154795820481 is the 393441-st square number.

154795820481 is the 196721-st centered octagonal number.

It is an amenable number.

154795820481 is a deficient number, since it is larger than the sum of its proper divisors (70051407618).

154795820481 is an frugal number, since it uses more digits than its factorization.

154795820481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1470 (or 735 counting only the distinct ones).

The product of its (nonzero) digits is 3225600, while the sum is 54.

The spelling of 154795820481 in words is "one hundred fifty-four billion, seven hundred ninety-five million, eight hundred twenty thousand, four hundred eighty-one".