26099497494 has 288 divisors, whose sum is σ = 70612439040. Its totient is φ = 6934636800.

The previous prime is 26099497483. The next prime is 26099497531. The reversal of 26099497494 is 49479499062.

It is a super-3 number, since 3×26099497494³ (a number of 32 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 92880634 + ... + 92880914.

It is an arithmetic number, because the mean of its divisors is an integer number (245182080).

Almost surely, 2^26099497494 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26099497494, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35306219520).

26099497494 is an abundant number, since it is smaller than the sum of its proper divisors (44512941546).

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

26099497494 is a wasteful number, since it uses less digits than its factorization.

26099497494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456 (or 446 counting only the distinct ones).

The product of its (nonzero) digits is 35271936, while the sum is 63.

The spelling of 26099497494 in words is "twenty-six billion, ninety-nine million, four hundred ninety-seven thousand, four hundred ninety-four".