20091830365831 has 8 divisors (see below), whose sum is σ = 22963265994240. Its totient is φ = 17220688274328.

The previous prime is 20091830365819. The next prime is 20091830365847. The reversal of 20091830365831 is 13856303819002.

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

It is not a de Polignac number, because 20091830365831 - 2⁷ = 20091830365703 is a prime.

It is a super-2 number, since 2×20091830365831² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20091830365031) 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, 73237531 + ... + 73511356.

It is an arithmetic number, because the mean of its divisors is an integer number (2870408249280).

Almost surely, 2^{20091830365831} is an apocalyptic number.

20091830365831 is a deficient number, since it is larger than the sum of its proper divisors (2871435628409).

20091830365831 is a wasteful number, since it uses less digits than its factorization.

20091830365831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146768453.

The product of its (nonzero) digits is 933120, while the sum is 49.

The spelling of 20091830365831 in words is "twenty trillion, ninety-one billion, eight hundred thirty million, three hundred sixty-five thousand, eight hundred thirty-one".