540256651631 has 2 divisors, whose sum is σ = 540256651632. Its totient is φ = 540256651630.

The previous prime is 540256651607. The next prime is 540256651751. The reversal of 540256651631 is 136156652045.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 540256651631 - 2¹⁰ = 540256650607 is a prime.

It is a super-2 number, since 2×540256651631² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (540256621631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270128325815 + 270128325816.

It is an arithmetic number, because the mean of its divisors is an integer number (270128325816).

Almost surely, 2^540256651631 is an apocalyptic number.

540256651631 is a deficient number, since it is larger than the sum of its proper divisors (1).

540256651631 is an equidigital number, since it uses as much as digits as its factorization.

540256651631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648000, while the sum is 44.

The spelling of 540256651631 in words is "five hundred forty billion, two hundred fifty-six million, six hundred fifty-one thousand, six hundred thirty-one".