20091830365830 has 32 divisors (see below), whose sum is σ = 48220704568800. Its totient is φ = 5357786798592.

The previous prime is 20091830365819. The next prime is 20091830365847. The reversal of 20091830365830 is 3856303819002.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 20091830365830.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2735886 + ... + 6904254.

It is an arithmetic number, because the mean of its divisors is an integer number (1506897017775).

Almost surely, 2^{20091830365830} is an apocalyptic number.

20091830365830 is an abundant number, since it is smaller than the sum of its proper divisors (28128874202970).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20091830365830 is a wasteful number, since it uses less digits than its factorization.

20091830365830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4329048.

The product of its (nonzero) digits is 933120, while the sum is 48.

The spelling of 20091830365830 in words is "twenty trillion, ninety-one billion, eight hundred thirty million, three hundred sixty-five thousand, eight hundred thirty".