12469136477 has 6 divisors (see below), whose sum is σ = 14504913918. Its totient is φ = 10687831224.

The previous prime is 12469136461. The next prime is 12469136501. The reversal of 12469136477 is 77463196421.

It can be written as a sum of positive squares in only one way, i.e., 11775288196 + 693848281 = 108514^2 + 26341^2 .

It is not a de Polignac number, because 12469136477 - 2⁴ = 12469136461 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 (12469136077) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 127236038 + ... + 127236135.

It is an arithmetic number, because the mean of its divisors is an integer number (2417485653).

Almost surely, 2^12469136477 is an apocalyptic number.

It is an amenable number.

12469136477 is a deficient number, since it is larger than the sum of its proper divisors (2035777441).

12469136477 is an equidigital number, since it uses as much as digits as its factorization.

12469136477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254472187 (or 254472180 counting only the distinct ones).

The product of its digits is 1524096, while the sum is 50.

The spelling of 12469136477 in words is "twelve billion, four hundred sixty-nine million, one hundred thirty-six thousand, four hundred seventy-seven".