26406189312 has 144 divisors (see below), whose sum is σ = 71205765120. Its totient is φ = 8686667776.

The previous prime is 26406189307. The next prime is 26406189367. The reversal of 26406189312 is 21398160462.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31472989 + ... + 31473827.

It is an arithmetic number, because the mean of its divisors is an integer number (494484480).

Almost surely, 2^26406189312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26406189312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35602882560).

26406189312 is an abundant number, since it is smaller than the sum of its proper divisors (44799575808).

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

26406189312 is a wasteful number, since it uses less digits than its factorization.

26406189312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1348 (or 1334 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 42.

The spelling of 26406189312 in words is "twenty-six billion, four hundred six million, one hundred eighty-nine thousand, three hundred twelve".