20990361168292 has 24 divisors (see below), whose sum is σ = 37097771719680. Its totient is φ = 10391334438240.

The previous prime is 20990361168281. The next prime is 20990361168317. The reversal of 20990361168292 is 29286116309902.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41827567 + ... + 42326422.

It is an arithmetic number, because the mean of its divisors is an integer number (1545740488320).

Almost surely, 2^{20990361168292} is an apocalyptic number.

It is an amenable number.

20990361168292 is a deficient number, since it is larger than the sum of its proper divisors (16107410551388).

20990361168292 is a wasteful number, since it uses less digits than its factorization.

20990361168292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84154611 (or 84154609 counting only the distinct ones).

The product of its (nonzero) digits is 5038848, while the sum is 58.

The spelling of 20990361168292 in words is "twenty trillion, nine hundred ninety billion, three hundred sixty-one million, one hundred sixty-eight thousand, two hundred ninety-two".