254454421545 has 32 divisors (see below), whose sum is σ = 452810217600. Its totient is φ = 135574984512.

The previous prime is 254454421519. The next prime is 254454421597. The reversal of 254454421545 is 545124454452.

254454421545 is a `hidden beast` number, since 2 + 5 + 4 + 45 + 44 + 21 + 545 = 666.

It is not a de Polignac number, because 254454421545 - 2²⁰ = 254453372969 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 254454421545.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 793575 + ... + 1067084.

It is an arithmetic number, because the mean of its divisors is an integer number (14150319300).

Almost surely, 2^254454421545 is an apocalyptic number.

It is an amenable number.

254454421545 is a deficient number, since it is larger than the sum of its proper divisors (198355796055).

254454421545 is a wasteful number, since it uses less digits than its factorization.

254454421545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1861686 (or 1861680 counting only the distinct ones).

The product of its digits is 2560000, while the sum is 45.

Adding to 254454421545 its reverse (545124454452), we get a palindrome (799578875997).

The spelling of 254454421545 in words is "two hundred fifty-four billion, four hundred fifty-four million, four hundred twenty-one thousand, five hundred forty-five".