26416630388 has 6 divisors (see below), whose sum is σ = 46229103186. Its totient is φ = 13208315192.

The previous prime is 26416630369. The next prime is 26416630393. The reversal of 26416630388 is 88303661462.

It can be written as a sum of positive squares in only one way, i.e., 25637773924 + 778856464 = 160118^2 + 27908^2 .

It is a super-2 number, since 2×26416630388² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3302078795 + ... + 3302078802.

It is an arithmetic number, because the mean of its divisors is an integer number (7704850531).

Almost surely, 2^26416630388 is an apocalyptic number.

It is an amenable number.

26416630388 is a deficient number, since it is larger than the sum of its proper divisors (19812472798).

26416630388 is a wasteful number, since it uses less digits than its factorization.

26416630388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6604157601 (or 6604157599 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 47.

The spelling of 26416630388 in words is "twenty-six billion, four hundred sixteen million, six hundred thirty thousand, three hundred eighty-eight".