26458674840 has 768 divisors, whose sum is σ = 102696854400. Its totient is φ = 6016757760.

The previous prime is 26458674833. The next prime is 26458674857. The reversal of 26458674840 is 4847685462.

It is a happy number.

It is a super-2 number, since 2×26458674840² (a number of 22 digits) contains 22 as substring.

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 191 ways as a sum of consecutive naturals, for example, 499220254 + ... + 499220306.

Almost surely, 2^26458674840 is an apocalyptic number.

26458674840 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 26458674840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51348427200).

26458674840 is an abundant number, since it is smaller than the sum of its proper divisors (76238179560).

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

26458674840 is a wasteful number, since it uses less digits than its factorization.

26458674840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185 (or 144 counting only the distinct ones).

The product of its (nonzero) digits is 10321920, while the sum is 54.

The spelling of 26458674840 in words is "twenty-six billion, four hundred fifty-eight million, six hundred seventy-four thousand, eight hundred forty".