540403065135251 has 2 divisors, whose sum is σ = 540403065135252. Its totient is φ = 540403065135250.

The previous prime is 540403065135233. The next prime is 540403065135313. The reversal of 540403065135251 is 152531560304045.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 540403065135251 - 2³⁸ = 540128187228307 is a prime.

It is not a weakly prime, because it can be changed into another prime (540403065105251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270201532567625 + 270201532567626.

It is an arithmetic number, because the mean of its divisors is an integer number (270201532567626).

Almost surely, 2^{540403065135251} is an apocalyptic number.

540403065135251 is a deficient number, since it is larger than the sum of its proper divisors (1).

540403065135251 is an equidigital number, since it uses as much as digits as its factorization.

540403065135251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080000, while the sum is 44.

The spelling of 540403065135251 in words is "five hundred forty trillion, four hundred three billion, sixty-five million, one hundred thirty-five thousand, two hundred fifty-one".