13256387463 has 16 divisors (see below), whose sum is σ = 19283947776. Its totient is φ = 8033370240.

The previous prime is 13256387453. The next prime is 13256387503. The reversal of 13256387463 is 36478365231.

It is not a de Polignac number, because 13256387463 - 2¹² = 13256383367 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13256387453) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 602431 + ... + 624047.

It is an arithmetic number, because the mean of its divisors is an integer number (1205246736).

Almost surely, 2^13256387463 is an apocalyptic number.

13256387463 is a deficient number, since it is larger than the sum of its proper divisors (6027560313).

13256387463 is a wasteful number, since it uses less digits than its factorization.

13256387463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40214.

The product of its digits is 2177280, while the sum is 48.

The spelling of 13256387463 in words is "thirteen billion, two hundred fifty-six million, three hundred eighty-seven thousand, four hundred sixty-three".