26291659020 has 96 divisors (see below), whose sum is σ = 80363356416. Its totient is φ = 6369427200.

The previous prime is 26291658959. The next prime is 26291659081. The reversal of 26291659020 is 2095619262.

It is an interprime number because it is at equal distance from previous prime (26291658959) and next prime (26291659081).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1024182 + ... + 1049538.

It is an arithmetic number, because the mean of its divisors is an integer number (837118296).

Almost surely, 2^26291659020 is an apocalyptic number.

26291659020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26291659020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40181678208).

26291659020 is an abundant number, since it is smaller than the sum of its proper divisors (54071697396).

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

26291659020 is a wasteful number, since it uses less digits than its factorization.

26291659020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26951 (or 26949 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 42.

The spelling of 26291659020 in words is "twenty-six billion, two hundred ninety-one million, six hundred fifty-nine thousand, twenty".