2356783391081 has 8 divisors (see below), whose sum is σ = 2693522666304. Its totient is φ = 2020058099280.

The previous prime is 2356783391069. The next prime is 2356783391089. The reversal of 2356783391081 is 1801933876532.

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 2356783391081 - 2³⁴ = 2339603521897 is a prime.

It is a super-2 number, since 2×2356783391081² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2356783391089) 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, 3132170 + ... + 3811043.

It is an arithmetic number, because the mean of its divisors is an integer number (336690333288).

Almost surely, 2^{2356783391081} is an apocalyptic number.

It is an amenable number.

2356783391081 is a deficient number, since it is larger than the sum of its proper divisors (336739275223).

2356783391081 is an equidigital number, since it uses as much as digits as its factorization.

2356783391081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6991711.

The product of its (nonzero) digits is 6531840, while the sum is 56.

The spelling of 2356783391081 in words is "two trillion, three hundred fifty-six billion, seven hundred eighty-three million, three hundred ninety-one thousand, eighty-one".