254145551644 has 24 divisors (see below), whose sum is σ = 476207968320. Its totient is φ = 118254107136.

The previous prime is 254145551623. The next prime is 254145551683. The reversal of 254145551644 is 446155541452.

It is a super-2 number, since 2×254145551644² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 254145551594 and 254145551603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20990772 + ... + 21002875.

It is an arithmetic number, because the mean of its divisors is an integer number (19841998680).

Almost surely, 2^254145551644 is an apocalyptic number.

It is an amenable number.

254145551644 is a deficient number, since it is larger than the sum of its proper divisors (222062416676).

254145551644 is a wasteful number, since it uses less digits than its factorization.

254145551644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41993757 (or 41993755 counting only the distinct ones).

The product of its digits is 1920000, while the sum is 46.

The spelling of 254145551644 in words is "two hundred fifty-four billion, one hundred forty-five million, five hundred fifty-one thousand, six hundred forty-four".