2135726857 has 8 divisors (see below), whose sum is σ = 2336926752. Its totient is φ = 1935700800.

The previous prime is 2135726851. The next prime is 2135726861. The reversal of 2135726857 is 7586275312.

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

It is not a de Polignac number, because 2135726857 - 2¹⁵ = 2135694089 is a prime.

It is a super-2 number, since 2×2135726857² = 9122658415422196898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2135726851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 289648 + ... + 296929.

It is an arithmetic number, because the mean of its divisors is an integer number (292115844).

Almost surely, 2^2135726857 is an apocalyptic number.

It is an amenable number.

2135726857 is a deficient number, since it is larger than the sum of its proper divisors (201199895).

2135726857 is a wasteful number, since it uses less digits than its factorization.

2135726857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 586919.

The product of its digits is 705600, while the sum is 46.

The square root of 2135726857 is about 46213.9249252863. The cubic root of 2135726857 is about 1287.8004415519.

The spelling of 2135726857 in words is "two billion, one hundred thirty-five million, seven hundred twenty-six thousand, eight hundred fifty-seven".