26730779386 has 32 divisors (see below), whose sum is σ = 41801997312. Its totient is φ = 12805879680.

The previous prime is 26730779347. The next prime is 26730779399. The reversal of 26730779386 is 68397703762.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 26730779386.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3368155 + ... + 3376081.

It is an arithmetic number, because the mean of its divisors is an integer number (1306312416).

Almost surely, 2^26730779386 is an apocalyptic number.

26730779386 is a deficient number, since it is larger than the sum of its proper divisors (15071217926).

26730779386 is a wasteful number, since it uses less digits than its factorization.

26730779386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8494.

The product of its (nonzero) digits is 16003008, while the sum is 58.

The spelling of 26730779386 in words is "twenty-six billion, seven hundred thirty million, seven hundred seventy-nine thousand, three hundred eighty-six".