12499774077 has 16 divisors (see below), whose sum is σ = 19054311552. Its totient is φ = 7140089280.

The previous prime is 12499774073. The next prime is 12499774081. The reversal of 12499774077 is 77047799421.

It is an interprime number because it is at equal distance from previous prime (12499774073) and next prime (12499774081).

It is not a de Polignac number, because 12499774077 - 2² = 12499774073 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12499774073) 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 15 ways as a sum of consecutive naturals, for example, 51018 + ... + 166139.

It is an arithmetic number, because the mean of its divisors is an integer number (1190894472).

Almost surely, 2^12499774077 is an apocalyptic number.

It is an amenable number.

12499774077 is a deficient number, since it is larger than the sum of its proper divisors (6554537475).

12499774077 is a wasteful number, since it uses less digits than its factorization.

12499774077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219908.

The product of its (nonzero) digits is 6223392, while the sum is 57.

The spelling of 12499774077 in words is "twelve billion, four hundred ninety-nine million, seven hundred seventy-four thousand, seventy-seven".