12562742061 has 24 divisors (see below), whose sum is σ = 19076075200. Its totient is φ = 8260421472.

The previous prime is 12562742047. The next prime is 12562742081. The reversal of 12562742061 is 16024726521.

It is a happy number.

12562742061 is a `hidden beast` number, since 1 + 2 + 5 + 627 + 4 + 20 + 6 + 1 = 666.

It is not a de Polignac number, because 12562742061 - 2²¹ = 12560644909 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 (12562742041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 336361 + ... + 371838.

Almost surely, 2^12562742061 is an apocalyptic number.

It is an amenable number.

12562742061 is a deficient number, since it is larger than the sum of its proper divisors (6513333139).

12562742061 is an frugal number, since it uses more digits than its factorization.

12562742061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 708287 (or 708275 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The spelling of 12562742061 in words is "twelve billion, five hundred sixty-two million, seven hundred forty-two thousand, sixty-one".