1139806986257 has 18 divisors (see below), whose sum is σ = 1168091772498. Its totient is φ = 1112116302528.

The previous prime is 1139806986221. The next prime is 1139806986271. The reversal of 1139806986257 is 7526896089311.

It can be written as a sum of positive squares in only one way, i.e., 645554399296 + 494252586961 = 803464^2 + 703031^2 .

It is not a de Polignac number, because 1139806986257 - 2³⁶ = 1071087509521 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1139806986193 and 1139806986202.

It is not an unprimeable number, because it can be changed into a prime (1139806982257) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 760377494 + ... + 760378992.

It is an arithmetic number, because the mean of its divisors is an integer number (64893987361).

Almost surely, 2^{1139806986257} is an apocalyptic number.

It is an amenable number.

1139806986257 is a deficient number, since it is larger than the sum of its proper divisors (28284786241).

1139806986257 is an frugal number, since it uses more digits than its factorization.

1139806986257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3245 (or 1679 counting only the distinct ones).

The product of its (nonzero) digits is 39191040, while the sum is 65.

The spelling of 1139806986257 in words is "one trillion, one hundred thirty-nine billion, eight hundred six million, nine hundred eighty-six thousand, two hundred fifty-seven".