15478462387 has 2 divisors, whose sum is σ = 15478462388. Its totient is φ = 15478462386.

The previous prime is 15478462367. The next prime is 15478462411. The reversal of 15478462387 is 78326487451.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 15478462387 - 2²³ = 15470073779 is a prime.

It is not a weakly prime, because it can be changed into another prime (15478462357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7739231193 + 7739231194.

It is an arithmetic number, because the mean of its divisors is an integer number (7739231194).

Almost surely, 2^15478462387 is an apocalyptic number.

15478462387 is a deficient number, since it is larger than the sum of its proper divisors (1).

15478462387 is an equidigital number, since it uses as much as digits as its factorization.

15478462387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9031680, while the sum is 55.

The spelling of 15478462387 in words is "fifteen billion, four hundred seventy-eight million, four hundred sixty-two thousand, three hundred eighty-seven".