15042551281 has 2 divisors, whose sum is σ = 15042551282. Its totient is φ = 15042551280.

The previous prime is 15042551191. The next prime is 15042551309. The reversal of 15042551281 is 18215524051.

15042551281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13698595681 + 1343955600 = 117041^2 + 36660^2 .

It is a cyclic number.

It is not a de Polignac number, because 15042551281 - 2²⁹ = 14505680369 is a prime.

It is a super-2 number, since 2×15042551281² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (15042551581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7521275640 + 7521275641.

It is an arithmetic number, because the mean of its divisors is an integer number (7521275641).

Almost surely, 2^15042551281 is an apocalyptic number.

It is an amenable number.

15042551281 is a deficient number, since it is larger than the sum of its proper divisors (1).

15042551281 is an equidigital number, since it uses as much as digits as its factorization.

15042551281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16000, while the sum is 34.

The spelling of 15042551281 in words is "fifteen billion, forty-two million, five hundred fifty-one thousand, two hundred eighty-one".