12516896434 has 12 divisors (see below), whose sum is σ = 21840707214. Its totient is φ = 5364384144.

The previous prime is 12516896429. The next prime is 12516896461. The reversal of 12516896434 is 43469861521.

It can be written as a sum of positive squares in only one way, i.e., 12178226025 + 338670409 = 110355^2 + 18403^2 .

It is a Harshad number since it is a multiple of its sum of digits (49).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 63861619 + ... + 63861814.

Almost surely, 2^12516896434 is an apocalyptic number.

12516896434 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

12516896434 is a deficient number, since it is larger than the sum of its proper divisors (9323810780).

12516896434 is a wasteful number, since it uses less digits than its factorization.

12516896434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127723449 (or 127723442 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 49.

The spelling of 12516896434 in words is "twelve billion, five hundred sixteen million, eight hundred ninety-six thousand, four hundred thirty-four".