13077523449 has 9 divisors (see below), whose sum is σ = 18890251653. Its totient is φ = 8718120252.

The previous prime is 13077523447. The next prime is 13077523457. The reversal of 13077523449 is 94432577031.

The square root of 13077523449 is 114357.

It is a perfect power (a square), and thus also a powerful number.

13077523449 is a `hidden beast` number, since 1 + 307 + 75 + 234 + 49 = 666.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 13077523449 - 2¹ = 13077523447 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13077523447) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 324012 + ... + 362130.

Almost surely, 2^13077523449 is an apocalyptic number.

13077523449 is the 114357-th square number.

13077523449 is the 57179-th centered octagonal number.

It is an amenable number.

13077523449 is a deficient number, since it is larger than the sum of its proper divisors (5812728204).

13077523449 is an frugal number, since it uses more digits than its factorization.

13077523449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76244 (or 38122 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 45.

The spelling of 13077523449 in words is "thirteen billion, seventy-seven million, five hundred twenty-three thousand, four hundred forty-nine".