540256663251 has 24 divisors (see below), whose sum is σ = 783104138336. Its totient is φ = 358910248320.

The previous prime is 540256663249. The next prime is 540256663253. The reversal of 540256663251 is 152366652045.

It is an interprime number because it is at equal distance from previous prime (540256663249) and next prime (540256663253).

It is not a de Polignac number, because 540256663251 - 2¹ = 540256663249 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 540256663197 and 540256663206.

It is not an unprimeable number, because it can be changed into a prime (540256663253) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9727581 + ... + 9782961.

Almost surely, 2^540256663251 is an apocalyptic number.

540256663251 is a deficient number, since it is larger than the sum of its proper divisors (242847475085).

540256663251 is a wasteful number, since it uses less digits than its factorization.

540256663251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59163 (or 59160 counting only the distinct ones).

The product of its (nonzero) digits is 1296000, while the sum is 45.

The spelling of 540256663251 in words is "five hundred forty billion, two hundred fifty-six million, six hundred sixty-three thousand, two hundred fifty-one".