15400847085539 has 2 divisors, whose sum is σ = 15400847085540. Its totient is φ = 15400847085538.

The previous prime is 15400847085511. The next prime is 15400847085557. The reversal of 15400847085539 is 93558074800451.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15400847085539 is a prime.

It is a super-2 number, since 2×15400847085539² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (15400843085539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7700423542769 + 7700423542770.

It is an arithmetic number, because the mean of its divisors is an integer number (7700423542770).

Almost surely, 2^{15400847085539} is an apocalyptic number.

15400847085539 is a deficient number, since it is larger than the sum of its proper divisors (1).

15400847085539 is an equidigital number, since it uses as much as digits as its factorization.

15400847085539 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192000, while the sum is 59.

The spelling of 15400847085539 in words is "fifteen trillion, four hundred billion, eight hundred forty-seven million, eighty-five thousand, five hundred thirty-nine".