12969961451 has 4 divisors (see below), whose sum is σ = 13091176152. Its totient is φ = 12848746752.

The previous prime is 12969961447. The next prime is 12969961483. The reversal of 12969961451 is 15416996921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15416996921 = 409 ⋅37694369.

It is a cyclic number.

It is not a de Polignac number, because 12969961451 - 2² = 12969961447 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12969961393 and 12969961402.

It is not an unprimeable number, because it can be changed into a prime (12969961651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60607190 + ... + 60607403.

It is an arithmetic number, because the mean of its divisors is an integer number (3272794038).

Almost surely, 2^12969961451 is an apocalyptic number.

12969961451 is a deficient number, since it is larger than the sum of its proper divisors (121214701).

12969961451 is a wasteful number, since it uses less digits than its factorization.

12969961451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121214700.

The product of its digits is 1049760, while the sum is 53.

The spelling of 12969961451 in words is "twelve billion, nine hundred sixty-nine million, nine hundred sixty-one thousand, four hundred fifty-one".