26720401422 has 128 divisors (see below), whose sum is σ = 63877911552. Its totient is φ = 7344691200.

The previous prime is 26720401417. The next prime is 26720401429. The reversal of 26720401422 is 22410402762.

It is a self number, because there is not a number n which added to its sum of digits gives 26720401422.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26720401429) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 26376988 + ... + 26378000.

It is an arithmetic number, because the mean of its divisors is an integer number (499046184).

Almost surely, 2^26720401422 is an apocalyptic number.

26720401422 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 26720401422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31938955776).

26720401422 is an abundant number, since it is smaller than the sum of its proper divisors (37157510130).

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

26720401422 is a wasteful number, since it uses less digits than its factorization.

26720401422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1546.

The product of its (nonzero) digits is 10752, while the sum is 30.

The spelling of 26720401422 in words is "twenty-six billion, seven hundred twenty million, four hundred one thousand, four hundred twenty-two".