26668783020 has 96 divisors (see below), whose sum is σ = 81980188416. Its totient is φ = 6423955200.

The previous prime is 26668783019. The next prime is 26668783027. The reversal of 26668783020 is 2038786662.

It is a happy number.

It is a super-2 number, since 2×26668783020² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (26668783027) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25066 + ... + 232305.

It is an arithmetic number, because the mean of its divisors is an integer number (853960296).

Almost surely, 2^26668783020 is an apocalyptic number.

26668783020 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 26668783020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40990094208).

26668783020 is an abundant number, since it is smaller than the sum of its proper divisors (55311405396).

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

26668783020 is a wasteful number, since it uses less digits than its factorization.

26668783020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257551 (or 257549 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 48.

The spelling of 26668783020 in words is "twenty-six billion, six hundred sixty-eight million, seven hundred eighty-three thousand, twenty".