12045782949 has 4 divisors (see below), whose sum is σ = 16061043936. Its totient is φ = 8030521964.

The previous prime is 12045782909. The next prime is 12045782953. The reversal of 12045782949 is 94928754021.

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, and also an emirpimes, since its reverse is a distinct semiprime: 94928754021 = 3 ⋅31642918007.

It is a cyclic number.

It is not a de Polignac number, because 12045782949 - 2¹⁵ = 12045750181 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12045782909) 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, 2007630489 + ... + 2007630494.

It is an arithmetic number, because the mean of its divisors is an integer number (4015260984).

Almost surely, 2^12045782949 is an apocalyptic number.

It is an amenable number.

12045782949 is a deficient number, since it is larger than the sum of its proper divisors (4015260987).

12045782949 is an equidigital number, since it uses as much as digits as its factorization.

12045782949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4015260986.

The product of its (nonzero) digits is 1451520, while the sum is 51.

The spelling of 12045782949 in words is "twelve billion, forty-five million, seven hundred eighty-two thousand, nine hundred forty-nine".