20831898807040 has 36 divisors (see below), whose sum is σ = 49898907614304. Its totient is φ = 8332759522304.

The previous prime is 20831898807029. The next prime is 20831898807101. The reversal of 20831898807040 is 4070889813802.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8137459192 + ... + 8137461751.

It is an arithmetic number, because the mean of its divisors is an integer number (1386080767064).

Almost surely, 2^{20831898807040} is an apocalyptic number.

20831898807040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20831898807040 is an abundant number, since it is smaller than the sum of its proper divisors (29067008807264).

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

20831898807040 is an equidigital number, since it uses as much as digits as its factorization.

20831898807040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16274920964 (or 16274920950 counting only the distinct ones).

The product of its (nonzero) digits is 6193152, while the sum is 58.

The spelling of 20831898807040 in words is "twenty trillion, eight hundred thirty-one billion, eight hundred ninety-eight million, eight hundred seven thousand, forty".