15887481607 has 2 divisors, whose sum is σ = 15887481608. Its totient is φ = 15887481606.

The previous prime is 15887481601. The next prime is 15887481647. The reversal of 15887481607 is 70618478851.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15887481607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15887481601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7943740803 + 7943740804.

It is an arithmetic number, because the mean of its divisors is an integer number (7943740804).

Almost surely, 2^15887481607 is an apocalyptic number.

15887481607 is a deficient number, since it is larger than the sum of its proper divisors (1).

15887481607 is an equidigital number, since it uses as much as digits as its factorization.

15887481607 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3010560, while the sum is 55.

The spelling of 15887481607 in words is "fifteen billion, eight hundred eighty-seven million, four hundred eighty-one thousand, six hundred seven".