2149086691257 has 8 divisors (see below), whose sum is σ = 3125944278240. Its totient is φ = 1302476782560.

The previous prime is 2149086691243. The next prime is 2149086691261. The reversal of 2149086691257 is 7521966809412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-2149086691257 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2149086691257.

It is not an unprimeable number, because it can be changed into a prime (2149086691457) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32561919532 + ... + 32561919597.

It is an arithmetic number, because the mean of its divisors is an integer number (390743034780).

Almost surely, 2^{2149086691257} is an apocalyptic number.

It is an amenable number.

2149086691257 is a deficient number, since it is larger than the sum of its proper divisors (976857586983).

2149086691257 is a wasteful number, since it uses less digits than its factorization.

2149086691257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65123839143.

The product of its (nonzero) digits is 13063680, while the sum is 60.

The spelling of 2149086691257 in words is "two trillion, one hundred forty-nine billion, eighty-six million, six hundred ninety-one thousand, two hundred fifty-seven".