15120204762281 has 2 divisors, whose sum is σ = 15120204762282. Its totient is φ = 15120204762280.

The previous prime is 15120204762263. The next prime is 15120204762283. The reversal of 15120204762281 is 18226740202151.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12071566541056 + 3048638221225 = 3474416^2 + 1746035^2 .

It is a cyclic number.

It is not a de Polignac number, because 15120204762281 - 2³⁴ = 15103024893097 is a prime.

It is a super-2 number, since 2×15120204762281² (a number of 27 digits) contains 22 as substring.

Together with 15120204762283, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (15120204762283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7560102381140 + 7560102381141.

It is an arithmetic number, because the mean of its divisors is an integer number (7560102381141).

Almost surely, 2^{15120204762281} is an apocalyptic number.

It is an amenable number.

15120204762281 is a deficient number, since it is larger than the sum of its proper divisors (1).

15120204762281 is an equidigital number, since it uses as much as digits as its factorization.

15120204762281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 107520, while the sum is 41.

The spelling of 15120204762281 in words is "fifteen trillion, one hundred twenty billion, two hundred four million, seven hundred sixty-two thousand, two hundred eighty-one".