26458320398040 has 320 divisors, whose sum is σ = 94397751280800. Its totient is φ = 6623787405312.

The previous prime is 26458320398039. The next prime is 26458320398053. The reversal of 26458320398040 is 4089302385462.

26458320398040 is a `hidden beast` number, since 2 + 6 + 4 + 583 + 20 + 39 + 8 + 0 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 21261771 + ... + 22471749.

Almost surely, 2^{26458320398040} is an apocalyptic number.

26458320398040 is a gapful number since it is divisible by the number (20) 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 26458320398040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47198875640400).

26458320398040 is an abundant number, since it is smaller than the sum of its proper divisors (67939430882760).

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

26458320398040 is a wasteful number, since it uses less digits than its factorization.

26458320398040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1210416 (or 1210403 counting only the distinct ones).

The product of its (nonzero) digits is 9953280, while the sum is 54.

The spelling of 26458320398040 in words is "twenty-six trillion, four hundred fifty-eight billion, three hundred twenty million, three hundred ninety-eight thousand, forty".