26423012730 has 128 divisors (see below), whose sum is σ = 67016678400. Its totient is φ = 6657158144.

The previous prime is 26423012683. The next prime is 26423012731. The reversal of 26423012730 is 3721032462.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (26423012731) 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, 33152692 + ... + 33153488.

It is an arithmetic number, because the mean of its divisors is an integer number (523567800).

Almost surely, 2^26423012730 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26423012730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33508339200).

26423012730 is an abundant number, since it is smaller than the sum of its proper divisors (40593665670).

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

26423012730 is a wasteful number, since it uses less digits than its factorization.

26423012730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1608.

The product of its (nonzero) digits is 12096, while the sum is 30.

The spelling of 26423012730 in words is "twenty-six billion, four hundred twenty-three million, twelve thousand, seven hundred thirty".