26431486704 has 320 divisors, whose sum is σ = 91541760000. Its totient is φ = 7290259200.

The previous prime is 26431486703. The next prime is 26431486717. The reversal of 26431486704 is 40768413462.

26431486704 is a `hidden beast` number, since 264 + 314 + 8 + 6 + 70 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 26431486704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26431486703) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4294029 + ... + 4300179.

It is an arithmetic number, because the mean of its divisors is an integer number (286068000).

Almost surely, 2^26431486704 is an apocalyptic number.

26431486704 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26431486704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45770880000).

26431486704 is an abundant number, since it is smaller than the sum of its proper divisors (65110273296).

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

26431486704 is a wasteful number, since it uses less digits than its factorization.

26431486704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6218 (or 6192 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 45.

The spelling of 26431486704 in words is "twenty-six billion, four hundred thirty-one million, four hundred eighty-six thousand, seven hundred four".