26464840369 has 12 divisors (see below), whose sum is σ = 29096580240. Its totient is φ = 24053051000.

The previous prime is 26464840331. The next prime is 26464840411. The reversal of 26464840369 is 96304846462.

It is not a de Polignac number, because 26464840369 - 2¹¹ = 26464838321 is a prime.

It is a super-2 number, since 2×26464840369² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26464840319) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 514002 + ... + 563140.

It is an arithmetic number, because the mean of its divisors is an integer number (2424715020).

Almost surely, 2^26464840369 is an apocalyptic number.

It is an amenable number.

26464840369 is a deficient number, since it is larger than the sum of its proper divisors (2631739871).

26464840369 is a wasteful number, since it uses less digits than its factorization.

26464840369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53612 (or 53601 counting only the distinct ones).

The product of its (nonzero) digits is 5971968, while the sum is 52.

The spelling of 26464840369 in words is "twenty-six billion, four hundred sixty-four million, eight hundred forty thousand, three hundred sixty-nine".