26850191664 has 40 divisors (see below), whose sum is σ = 69909176320. Its totient is φ = 8879588928.

The previous prime is 26850191611. The next prime is 26850191699. The reversal of 26850191664 is 46619105862.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2196184 + ... + 2208375.

It is an arithmetic number, because the mean of its divisors is an integer number (1747729408).

Almost surely, 2^26850191664 is an apocalyptic number.

26850191664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

26850191664 is an abundant number, since it is smaller than the sum of its proper divisors (43058984656).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26850191664 is a wasteful number, since it uses less digits than its factorization.

26850191664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4404697 (or 4404691 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 48.

The spelling of 26850191664 in words is "twenty-six billion, eight hundred fifty million, one hundred ninety-one thousand, six hundred sixty-four".