16256737487 has 2 divisors, whose sum is σ = 16256737488. Its totient is φ = 16256737486.

The previous prime is 16256737403. The next prime is 16256737493. The reversal of 16256737487 is 78473765261.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (78473765261) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16256737487 - 2²² = 16252543183 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16256637487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8128368743 + 8128368744.

It is an arithmetic number, because the mean of its divisors is an integer number (8128368744).

Almost surely, 2^16256737487 is an apocalyptic number.

16256737487 is a deficient number, since it is larger than the sum of its proper divisors (1).

16256737487 is an equidigital number, since it uses as much as digits as its factorization.

16256737487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11854080, while the sum is 56.

The spelling of 16256737487 in words is "sixteen billion, two hundred fifty-six million, seven hundred thirty-seven thousand, four hundred eighty-seven".