2136858380609 has 8 divisors (see below), whose sum is σ = 2177268026472. Its totient is φ = 2096452126080.

The previous prime is 2136858380561. The next prime is 2136858380627. The reversal of 2136858380609 is 9060838586312.

It can be written as a sum of positive squares in 4 ways, for example, as 23242527025 + 2113615853584 = 152455^2 + 1453828^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 2136858380609 - 2²⁸ = 2136589945153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2136858380669) 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, 442667 + ... + 2114159.

It is an arithmetic number, because the mean of its divisors is an integer number (272158503309).

Almost surely, 2^{2136858380609} is an apocalyptic number.

It is an amenable number.

2136858380609 is a deficient number, since it is larger than the sum of its proper divisors (40409645863).

2136858380609 is a wasteful number, since it uses less digits than its factorization.

2136858380609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1695667.

The product of its (nonzero) digits is 14929920, while the sum is 59.

The spelling of 2136858380609 in words is "two trillion, one hundred thirty-six billion, eight hundred fifty-eight million, three hundred eighty thousand, six hundred nine".