26459642172 has 24 divisors (see below), whose sum is σ = 61755995392. Its totient is φ = 8817476400.

The previous prime is 26459642171. The next prime is 26459642179. The reversal of 26459642172 is 27124695462.

It is a super-2 number, since 2×26459642172² (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 (26459642171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 254404 + ... + 342987.

Almost surely, 2^26459642172 is an apocalyptic number.

It is an amenable number.

26459642172 is an abundant number, since it is smaller than the sum of its proper divisors (35296353220).

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

26459642172 is a wasteful number, since it uses less digits than its factorization.

26459642172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601089 (or 601087 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 48.

The spelling of 26459642172 in words is "twenty-six billion, four hundred fifty-nine million, six hundred forty-two thousand, one hundred seventy-two".