26138537830 has 16 divisors (see below), whose sum is σ = 47063689200. Its totient is φ = 10452232672.

The previous prime is 26138537771. The next prime is 26138537879. The reversal of 26138537830 is 3873583162.

It is a super-3 number, since 3×26138537830³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 363169 + ... + 429148.

It is an arithmetic number, because the mean of its divisors is an integer number (2941480575).

Almost surely, 2^26138537830 is an apocalyptic number.

26138537830 is a deficient number, since it is larger than the sum of its proper divisors (20925151370).

26138537830 is a wasteful number, since it uses less digits than its factorization.

26138537830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 795623.

The product of its (nonzero) digits is 725760, while the sum is 46.

The spelling of 26138537830 in words is "twenty-six billion, one hundred thirty-eight million, five hundred thirty-seven thousand, eight hundred thirty".