15414500579981 has 2 divisors, whose sum is σ = 15414500579982. Its totient is φ = 15414500579980.

The previous prime is 15414500579903. The next prime is 15414500579999. The reversal of 15414500579981 is 18997500541451.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14827821177481 + 586679402500 = 3850691^2 + 765950^2 .

It is a cyclic number.

It is not a de Polignac number, because 15414500579981 - 2¹⁸ = 15414500317837 is a prime.

It is a super-2 number, since 2×15414500579981² (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 15414500579981.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15414500579081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7707250289990 + 7707250289991.

It is an arithmetic number, because the mean of its divisors is an integer number (7707250289991).

Almost surely, 2^{15414500579981} is an apocalyptic number.

It is an amenable number.

15414500579981 is a deficient number, since it is larger than the sum of its proper divisors (1).

15414500579981 is an equidigital number, since it uses as much as digits as its factorization.

15414500579981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072000, while the sum is 59.

The spelling of 15414500579981 in words is "fifteen trillion, four hundred fourteen billion, five hundred million, five hundred seventy-nine thousand, nine hundred eighty-one".