26134201520 has 40 divisors (see below), whose sum is σ = 69442308384. Its totient is φ = 8960297472.

The previous prime is 26134201487. The next prime is 26134201523. The reversal of 26134201520 is 2510243162.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 26134201520.

It is not an unprimeable number, because it can be changed into a prime (26134201523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23333549 + ... + 23334668.

Almost surely, 2^26134201520 is an apocalyptic number.

26134201520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26134201520 is an abundant number, since it is smaller than the sum of its proper divisors (43308106864).

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

26134201520 is a wasteful number, since it uses less digits than its factorization.

26134201520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46668237 (or 46668231 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 26134201520 its reverse (2510243162), we get a palindrome (28644444682).

The spelling of 26134201520 in words is "twenty-six billion, one hundred thirty-four million, two hundred one thousand, five hundred twenty".