15120315487 has 2 divisors, whose sum is σ = 15120315488. Its totient is φ = 15120315486.

The previous prime is 15120315479. The next prime is 15120315523. The reversal of 15120315487 is 78451302151.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 15120315487 - 2³ = 15120315479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15120315467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7560157743 + 7560157744.

It is an arithmetic number, because the mean of its divisors is an integer number (7560157744).

Almost surely, 2^15120315487 is an apocalyptic number.

15120315487 is a deficient number, since it is larger than the sum of its proper divisors (1).

15120315487 is an equidigital number, since it uses as much as digits as its factorization.

15120315487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 33600, while the sum is 37.

The spelling of 15120315487 in words is "fifteen billion, one hundred twenty million, three hundred fifteen thousand, four hundred eighty-seven".