15263890157 has 2 divisors, whose sum is σ = 15263890158. Its totient is φ = 15263890156.

The previous prime is 15263890139. The next prime is 15263890163. The reversal of 15263890157 is 75109836251.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10744151716 + 4519738441 = 103654^2 + 67229^2 .

It is a cyclic number.

It is not a de Polignac number, because 15263890157 - 2¹² = 15263886061 is a prime.

It is a super-2 number, since 2×15263890157² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15263880157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7631945078 + 7631945079.

It is an arithmetic number, because the mean of its divisors is an integer number (7631945079).

Almost surely, 2^15263890157 is an apocalyptic number.

It is an amenable number.

15263890157 is a deficient number, since it is larger than the sum of its proper divisors (1).

15263890157 is an equidigital number, since it uses as much as digits as its factorization.

15263890157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 453600, while the sum is 47.

The spelling of 15263890157 in words is "fifteen billion, two hundred sixty-three million, eight hundred ninety thousand, one hundred fifty-seven".