15223861087 has 2 divisors, whose sum is σ = 15223861088. Its totient is φ = 15223861086.

The previous prime is 15223860923. The next prime is 15223861099. The reversal of 15223861087 is 78016832251.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15223861087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15223861687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7611930543 + 7611930544.

It is an arithmetic number, because the mean of its divisors is an integer number (7611930544).

Almost surely, 2^15223861087 is an apocalyptic number.

15223861087 is a deficient number, since it is larger than the sum of its proper divisors (1).

15223861087 is an equidigital number, since it uses as much as digits as its factorization.

15223861087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 161280, while the sum is 43.

The spelling of 15223861087 in words is "fifteen billion, two hundred twenty-three million, eight hundred sixty-one thousand, eighty-seven".