15655314281 has 2 divisors, whose sum is σ = 15655314282. Its totient is φ = 15655314280.

The previous prime is 15655314239. The next prime is 15655314307. The reversal of 15655314281 is 18241355651.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12737153881 + 2918160400 = 112859^2 + 54020^2 .

It is an emirp because it is prime and its reverse (18241355651) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15655314281 - 2²² = 15651119977 is a prime.

It is a super-2 number, since 2×15655314281² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (15655314221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7827657140 + 7827657141.

It is an arithmetic number, because the mean of its divisors is an integer number (7827657141).

Almost surely, 2^15655314281 is an apocalyptic number.

It is an amenable number.

15655314281 is a deficient number, since it is larger than the sum of its proper divisors (1).

15655314281 is an equidigital number, since it uses as much as digits as its factorization.

15655314281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 144000, while the sum is 41.

The spelling of 15655314281 in words is "fifteen billion, six hundred fifty-five million, three hundred fourteen thousand, two hundred eighty-one".