26168557550 has 24 divisors (see below), whose sum is σ = 48686950800. Its totient is φ = 10464534080.

The previous prime is 26168557489. The next prime is 26168557603. The reversal of 26168557550 is 5575586162.

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 115586 + ... + 256314.

It is an arithmetic number, because the mean of its divisors is an integer number (2028622950).

Almost surely, 2^26168557550 is an apocalyptic number.

26168557550 is a deficient number, since it is larger than the sum of its proper divisors (22518393250).

26168557550 is a wasteful number, since it uses less digits than its factorization.

26168557550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144460 (or 144455 counting only the distinct ones).

The product of its (nonzero) digits is 2520000, while the sum is 50.

The spelling of 26168557550 in words is "twenty-six billion, one hundred sixty-eight million, five hundred fifty-seven thousand, five hundred fifty".