15340938659947 has 2 divisors, whose sum is σ = 15340938659948. Its totient is φ = 15340938659946.

The previous prime is 15340938659929. The next prime is 15340938659953. The reversal of 15340938659947 is 74995683904351.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 15340938659947 - 2²³ = 15340930271339 is a prime.

It is a super-2 number, since 2×15340938659947² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 15340938659947.

It is not a weakly prime, because it can be changed into another prime (15340938659957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7670469329973 + 7670469329974.

It is an arithmetic number, because the mean of its divisors is an integer number (7670469329974).

Almost surely, 2^{15340938659947} is an apocalyptic number.

15340938659947 is a deficient number, since it is larger than the sum of its proper divisors (1).

15340938659947 is an equidigital number, since it uses as much as digits as its factorization.

15340938659947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 881798400, while the sum is 73.

The spelling of 15340938659947 in words is "fifteen trillion, three hundred forty billion, nine hundred thirty-eight million, six hundred fifty-nine thousand, nine hundred forty-seven".