26453206493 has 16 divisors (see below), whose sum is σ = 31167292800. Its totient is φ = 22440394368.

The previous prime is 26453206489. The next prime is 26453206529. The reversal of 26453206493 is 39460235462.

It is a happy number.

It is not a de Polignac number, because 26453206493 - 2² = 26453206489 is a prime.

It is a super-2 number, since 2×26453206493² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26453206463) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 364271 + ... + 430812.

It is an arithmetic number, because the mean of its divisors is an integer number (1947955800).

Almost surely, 2^26453206493 is an apocalyptic number.

It is an amenable number.

26453206493 is a deficient number, since it is larger than the sum of its proper divisors (4714086307).

26453206493 is an frugal number, since it uses more digits than its factorization.

26453206493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 795201 (or 795187 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 44.

The spelling of 26453206493 in words is "twenty-six billion, four hundred fifty-three million, two hundred six thousand, four hundred ninety-three".