20791322153 has 12 divisors (see below), whose sum is σ = 24206902272. Its totient is φ = 17805601800.

The previous prime is 20791322087. The next prime is 20791322171. The reversal of 20791322153 is 35122319702.

It is not a de Polignac number, because 20791322153 - 2¹² = 20791318057 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20791327153) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 127925 + ... + 240722.

It is an arithmetic number, because the mean of its divisors is an integer number (2017241856).

Almost surely, 2^20791322153 is an apocalyptic number.

It is an amenable number.

20791322153 is a deficient number, since it is larger than the sum of its proper divisors (3415580119).

20791322153 is a wasteful number, since it uses less digits than its factorization.

20791322153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369812 (or 369805 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 35.

The spelling of 20791322153 in words is "twenty billion, seven hundred ninety-one million, three hundred twenty-two thousand, one hundred fifty-three".