154404555220431 has 6 divisors (see below), whose sum is σ = 223028801985080. Its totient is φ = 102936370146948.

The previous prime is 154404555220417. The next prime is 154404555220459. The reversal of 154404555220431 is 134022555404451.

154404555220431 is a `hidden beast` number, since 1 + 5 + 4 + 4 + 0 + 45 + 552 + 20 + 4 + 31 = 666.

It is not a de Polignac number, because 154404555220431 - 2²² = 154404551026127 is a prime.

It is a super-2 number, since 2×154404555220431² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154404555222431) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8578030845571 + ... + 8578030845588.

Almost surely, 2^{154404555220431} is an apocalyptic number.

154404555220431 is a deficient number, since it is larger than the sum of its proper divisors (68624246764649).

154404555220431 is a wasteful number, since it uses less digits than its factorization.

154404555220431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17156061691165 (or 17156061691162 counting only the distinct ones).

The product of its (nonzero) digits is 1920000, while the sum is 45.

The spelling of 154404555220431 in words is "one hundred fifty-four trillion, four hundred four billion, five hundred fifty-five million, two hundred twenty thousand, four hundred thirty-one".