26244642642 has 32 divisors (see below), whose sum is σ = 54402532800. Its totient is φ = 8433678528.

The previous prime is 26244642631. The next prime is 26244642659. The reversal of 26244642642 is 24624644262.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 26244642594 and 26244642603.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 518092 + ... + 566487.

It is an arithmetic number, because the mean of its divisors is an integer number (1700079150).

Almost surely, 2^26244642642 is an apocalyptic number.

26244642642 is an abundant number, since it is smaller than the sum of its proper divisors (28157890158).

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

26244642642 is a wasteful number, since it uses less digits than its factorization.

26244642642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1084730.

The product of its digits is 884736, while the sum is 42.

The spelling of 26244642642 in words is "twenty-six billion, two hundred forty-four million, six hundred forty-two thousand, six hundred forty-two".