26388851450 has 72 divisors (see below), whose sum is σ = 53303508000. Its totient is φ = 9715318080.

The previous prime is 26388851449. The next prime is 26388851459. The reversal of 26388851450 is 5415888362.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is not an unprimeable number, because it can be changed into a prime (26388851459) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 3029201 + ... + 3037899.

It is an arithmetic number, because the mean of its divisors is an integer number (740326500).

Almost surely, 2^26388851450 is an apocalyptic number.

26388851450 is an abundant number, since it is smaller than the sum of its proper divisors (26914656550).

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

26388851450 is a wasteful number, since it uses less digits than its factorization.

26388851450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9096 (or 9078 counting only the distinct ones).

The product of its (nonzero) digits is 1843200, while the sum is 50.

The spelling of 26388851450 in words is "twenty-six billion, three hundred eighty-eight million, eight hundred fifty-one thousand, four hundred fifty".