540654305657 has 2 divisors, whose sum is σ = 540654305658. Its totient is φ = 540654305656.

The previous prime is 540654305623. The next prime is 540654305671. The reversal of 540654305657 is 756503456045.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 278772384121 + 261881921536 = 527989^2 + 511744^2 .

It is a cyclic number.

It is not a de Polignac number, because 540654305657 - 2¹⁰ = 540654304633 is a prime.

It is not a weakly prime, because it can be changed into another prime (540654305677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270327152828 + 270327152829.

It is an arithmetic number, because the mean of its divisors is an integer number (270327152829).

Almost surely, 2^540654305657 is an apocalyptic number.

It is an amenable number.

540654305657 is a deficient number, since it is larger than the sum of its proper divisors (1).

540654305657 is an equidigital number, since it uses as much as digits as its factorization.

540654305657 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7560000, while the sum is 50.

The spelling of 540654305657 in words is "five hundred forty billion, six hundred fifty-four million, three hundred five thousand, six hundred fifty-seven".