26431562352 has 80 divisors (see below), whose sum is σ = 73581068288. Its totient is φ = 8127578880.

The previous prime is 26431562327. The next prime is 26431562357. The reversal of 26431562352 is 25326513462.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 26431562352.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26431562357) 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, 1024977 + ... + 1050447.

Almost surely, 2^26431562352 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 26431562352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36790534144).

26431562352 is an abundant number, since it is smaller than the sum of its proper divisors (47149505936).

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

26431562352 is a wasteful number, since it uses less digits than its factorization.

26431562352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27158 (or 27152 counting only the distinct ones).

The product of its digits is 259200, while the sum is 39.

The spelling of 26431562352 in words is "twenty-six billion, four hundred thirty-one million, five hundred sixty-two thousand, three hundred fifty-two".