12781970461 has 16 divisors (see below), whose sum is σ = 14178693760. Its totient is φ = 11447956800.

The previous prime is 12781970459. The next prime is 12781970473. The reversal of 12781970461 is 16407918721.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12781970461 - 2¹ = 12781970459 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12781979461) 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, 8695 + ... + 160123.

It is an arithmetic number, because the mean of its divisors is an integer number (886168360).

Almost surely, 2^12781970461 is an apocalyptic number.

It is an amenable number.

12781970461 is a deficient number, since it is larger than the sum of its proper divisors (1396723299).

12781970461 is a wasteful number, since it uses less digits than its factorization.

12781970461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151636.

The product of its (nonzero) digits is 169344, while the sum is 46.

The spelling of 12781970461 in words is "twelve billion, seven hundred eighty-one million, nine hundred seventy thousand, four hundred sixty-one".