26143252550 has 24 divisors (see below), whose sum is σ = 48676618872. Its totient is φ = 10446512000.

The previous prime is 26143252549. The next prime is 26143252567. The reversal of 26143252550 is 5525234162.

It is a self number, because there is not a number n which added to its sum of digits gives 26143252550.

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, 220691 + ... + 317790.

It is an arithmetic number, because the mean of its divisors is an integer number (2028192453).

Almost surely, 2^26143252550 is an apocalyptic number.

26143252550 is a deficient number, since it is larger than the sum of its proper divisors (22533366322).

26143252550 is a wasteful number, since it uses less digits than its factorization.

26143252550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539464 (or 539459 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 35.

The spelling of 26143252550 in words is "twenty-six billion, one hundred forty-three million, two hundred fifty-two thousand, five hundred fifty".