154189372121163 has 40 divisors (see below), whose sum is σ = 238727720982960. Its totient is φ = 99097161341760.

The previous prime is 154189372121111. The next prime is 154189372121333. The reversal of 154189372121163 is 361121273981451.

It is a happy number.

154189372121163 is a `hidden beast` number, since 1 + 5 + 418 + 9 + 3 + 7 + 2 + 1 + 211 + 6 + 3 = 666.

It is not a de Polignac number, because 154189372121163 - 2²⁸ = 154189103685707 is a prime.

It is not an unprimeable number, because it can be changed into a prime (154189372121063) 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 39 ways as a sum of consecutive naturals, for example, 235672893 + ... + 236326238.

It is an arithmetic number, because the mean of its divisors is an integer number (5968193024574).

Almost surely, 2^{154189372121163} is an apocalyptic number.

154189372121163 is a deficient number, since it is larger than the sum of its proper divisors (84538348861797).

154189372121163 is a wasteful number, since it uses less digits than its factorization.

154189372121163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471999289 (or 471999280 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 54.

The spelling of 154189372121163 in words is "one hundred fifty-four trillion, one hundred eighty-nine billion, three hundred seventy-two million, one hundred twenty-one thousand, one hundred sixty-three".