12506897403 has 96 divisors (see below), whose sum is σ = 24564234240. Its totient is φ = 5921061120.

The previous prime is 12506897387. The next prime is 12506897411. The reversal of 12506897403 is 30479860521.

12506897403 is a `hidden beast` number, since 12 + 506 + 8 + 97 + 40 + 3 = 666.

12506897403 is a nontrivial binomial coefficient, being equal to C(158158, 2).

It is not a de Polignac number, because 12506897403 - 2⁴ = 12506897387 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12506897443) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 702925 + ... + 720497.

It is an arithmetic number, because the mean of its divisors is an integer number (255877440).

It is a 2-persistent number, because it is pandigital, and so is 2⋅12506897403 = 25013794806, but 3⋅12506897403 = 37520692209 is not.

Almost surely, 2^12506897403 is an apocalyptic number.

12506897403 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12506897403 is the 158157-th triangular number and also the 79079-th hexagonal number.

12506897403 is a deficient number, since it is larger than the sum of its proper divisors (12057336837).

12506897403 is a wasteful number, since it uses less digits than its factorization.

12506897403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17689 (or 17686 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

It can be divided in two parts, 12506 and 897403, that added together give a palindrome (909909).

The spelling of 12506897403 in words is "twelve billion, five hundred six million, eight hundred ninety-seven thousand, four hundred three".