26465898381 has 12 divisors (see below), whose sum is σ = 38211120288. Its totient is φ = 16286706384.

The previous prime is 26465898379. The next prime is 26465898419. The reversal of 26465898381 is 18389856462.

It is not a de Polignac number, because 26465898381 - 2¹ = 26465898379 is a prime.

It is a super-2 number, since 2×26465898381² (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 (26465898281) 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, 26099985 + ... + 26100998.

It is an arithmetic number, because the mean of its divisors is an integer number (3184260024).

Almost surely, 2^26465898381 is an apocalyptic number.

It is an amenable number.

26465898381 is a deficient number, since it is larger than the sum of its proper divisors (11745221907).

26465898381 is a wasteful number, since it uses less digits than its factorization.

26465898381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52201012 (or 52200999 counting only the distinct ones).

The product of its digits is 19906560, while the sum is 60.

The spelling of 26465898381 in words is "twenty-six billion, four hundred sixty-five million, eight hundred ninety-eight thousand, three hundred eighty-one".