26205017630 has 16 divisors (see below), whose sum is σ = 51457125744. Its totient is φ = 9529097280.

The previous prime is 26205017621. The next prime is 26205017669. The reversal of 26205017630 is 3671050262.

It is a super-2 number, since 2×26205017630² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119113607 + ... + 119113826.

It is an arithmetic number, because the mean of its divisors is an integer number (3216070359).

Almost surely, 2^26205017630 is an apocalyptic number.

26205017630 is a deficient number, since it is larger than the sum of its proper divisors (25252108114).

26205017630 is a wasteful number, since it uses less digits than its factorization.

26205017630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238227451.

The product of its (nonzero) digits is 15120, while the sum is 32.

Adding to 26205017630 its reverse (3671050262), we get a palindrome (29876067892).

The spelling of 26205017630 in words is "twenty-six billion, two hundred five million, seventeen thousand, six hundred thirty".