135589979257 has 4 divisors (see below), whose sum is σ = 137113462260. Its totient is φ = 134066496256.

The previous prime is 135589979177. The next prime is 135589979309. The reversal of 135589979257 is 752979985531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 752979985531 = 109267 ⋅6891193.

It can be written as a sum of positive squares in 2 ways, for example, as 40007600361 + 95582378896 = 200019^2 + 309164^2 .

It is a cyclic number.

It is not a de Polignac number, because 135589979257 - 2¹⁵ = 135589946489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135583979257) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 761741368 + ... + 761741545.

It is an arithmetic number, because the mean of its divisors is an integer number (34278365565).

Almost surely, 2^135589979257 is an apocalyptic number.

It is an amenable number.

135589979257 is a deficient number, since it is larger than the sum of its proper divisors (1523483003).

135589979257 is an equidigital number, since it uses as much as digits as its factorization.

135589979257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1523483002.

The product of its digits is 214326000, while the sum is 70.

The spelling of 135589979257 in words is "one hundred thirty-five billion, five hundred eighty-nine million, nine hundred seventy-nine thousand, two hundred fifty-seven".