20791898235 has 32 divisors (see below), whose sum is σ = 36970560000. Its totient is φ = 11086856928.

The previous prime is 20791898221. The next prime is 20791898249. The reversal of 20791898235 is 53289819702.

It is an interprime number because it is at equal distance from previous prime (20791898221) and next prime (20791898249).

It is not a de Polignac number, because 20791898235 - 2⁷ = 20791898107 is a prime.

It is a super-2 number, since 2×20791898235² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 879196 + ... + 902534.

It is an arithmetic number, because the mean of its divisors is an integer number (1155330000).

Almost surely, 2^20791898235 is an apocalyptic number.

20791898235 is a deficient number, since it is larger than the sum of its proper divisors (16178661765).

20791898235 is a wasteful number, since it uses less digits than its factorization.

20791898235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29952 (or 29946 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 54.

It can be divided in two parts, 207918 and 98235, that added together give a triangular number (306153 = T₇₈₂).

The spelling of 20791898235 in words is "twenty billion, seven hundred ninety-one million, eight hundred ninety-eight thousand, two hundred thirty-five".