11138726590 has 8 divisors (see below), whose sum is σ = 20049707880. Its totient is φ = 4455490632.

The previous prime is 11138726569. The next prime is 11138726671. The reversal of 11138726590 is 9562783111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 556936320 + ... + 556936339.

It is an arithmetic number, because the mean of its divisors is an integer number (2506213485).

Almost surely, 2^11138726590 is an apocalyptic number.

11138726590 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11138726590 is a deficient number, since it is larger than the sum of its proper divisors (8910981290).

11138726590 is a wasteful number, since it uses less digits than its factorization.

11138726590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1113872666.

The product of its (nonzero) digits is 90720, while the sum is 43.

The spelling of 11138726590 in words is "eleven billion, one hundred thirty-eight million, seven hundred twenty-six thousand, five hundred ninety".