26049098021 has 4 divisors (see below), whose sum is σ = 27420103200. Its totient is φ = 24678092844.

The previous prime is 26049098003. The next prime is 26049098029. The reversal of 26049098021 is 12089094062.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 26049098021 - 2⁶ = 26049097957 is a prime.

It is a super-2 number, since 2×26049098021² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 26049098021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26049098029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 685502561 + ... + 685502598.

It is an arithmetic number, because the mean of its divisors is an integer number (6855025800).

Almost surely, 2^26049098021 is an apocalyptic number.

It is an amenable number.

26049098021 is a deficient number, since it is larger than the sum of its proper divisors (1371005179).

26049098021 is a wasteful number, since it uses less digits than its factorization.

26049098021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1371005178.

The product of its (nonzero) digits is 62208, while the sum is 41.

The spelling of 26049098021 in words is "twenty-six billion, forty-nine million, ninety-eight thousand, twenty-one".