12451236761 has 4 divisors (see below), whose sum is σ = 12459843072. Its totient is φ = 12442630452.

The previous prime is 12451236727. The next prime is 12451236799. The reversal of 12451236761 is 16763215421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12451236761 - 2⁶ = 12451236697 is a prime.

It is a super-2 number, since 2×12451236761² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12451236361) 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, 4300985 + ... + 4303878.

It is an arithmetic number, because the mean of its divisors is an integer number (3114960768).

Almost surely, 2^12451236761 is an apocalyptic number.

It is an amenable number.

12451236761 is a deficient number, since it is larger than the sum of its proper divisors (8606311).

12451236761 is an equidigital number, since it uses as much as digits as its factorization.

12451236761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8606310.

The product of its digits is 60480, while the sum is 38.

The spelling of 12451236761 in words is "twelve billion, four hundred fifty-one million, two hundred thirty-six thousand, seven hundred sixty-one".