26749436220 has 96 divisors (see below), whose sum is σ = 89622066240. Its totient is φ = 6584474880.

The previous prime is 26749436191. The next prime is 26749436221. The reversal of 26749436220 is 2263494762.

26749436220 is a `hidden beast` number, since 267 + 4 + 9 + 4 + 362 + 20 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26749436221) 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, 1898211 + ... + 1912250.

It is an arithmetic number, because the mean of its divisors is an integer number (933563190).

Almost surely, 2^26749436220 is an apocalyptic number.

26749436220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26749436220 is an abundant number, since it is smaller than the sum of its proper divisors (62872630020).

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

26749436220 is a wasteful number, since it uses less digits than its factorization.

26749436220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3810492 (or 3810484 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 45.

The spelling of 26749436220 in words is "twenty-six billion, seven hundred forty-nine million, four hundred thirty-six thousand, two hundred twenty".