1540514145931 has 2 divisors, whose sum is σ = 1540514145932. Its totient is φ = 1540514145930.

The previous prime is 1540514145899. The next prime is 1540514145943. The reversal of 1540514145931 is 1395414150451.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1540514145931 - 2⁵ = 1540514145899 is a prime.

It is a super-2 number, since 2×1540514145931² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1540514175931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 770257072965 + 770257072966.

It is an arithmetic number, because the mean of its divisors is an integer number (770257072966).

Almost surely, 2^{1540514145931} is an apocalyptic number.

1540514145931 is a deficient number, since it is larger than the sum of its proper divisors (1).

1540514145931 is an equidigital number, since it uses as much as digits as its factorization.

1540514145931 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216000, while the sum is 43.

The spelling of 1540514145931 in words is "one trillion, five hundred forty billion, five hundred fourteen million, one hundred forty-five thousand, nine hundred thirty-one".