12749372826261 has 16 divisors (see below), whose sum is σ = 17613101534784. Its totient is φ = 8196678814464.

The previous prime is 12749372826247. The next prime is 12749372826263. The reversal of 12749372826261 is 16262827394721.

12749372826261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12749372826261 - 2¹⁹ = 12749372301973 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12749372826195 and 12749372826204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12749372826263) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 508214071 + ... + 508239156.

It is an arithmetic number, because the mean of its divisors is an integer number (1100818845924).

Almost surely, 2^{12749372826261} is an apocalyptic number.

It is an amenable number.

12749372826261 is a deficient number, since it is larger than the sum of its proper divisors (4863728708523).

12749372826261 is a wasteful number, since it uses less digits than its factorization.

12749372826261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1016453380.

The product of its digits is 24385536, while the sum is 60.

The spelling of 12749372826261 in words is "twelve trillion, seven hundred forty-nine billion, three hundred seventy-two million, eight hundred twenty-six thousand, two hundred sixty-one".