26989842090 has 64 divisors (see below), whose sum is σ = 70951023360. Its totient is φ = 6540334080.

The previous prime is 26989842083. The next prime is 26989842097. The reversal of 26989842090 is 9024898962.

It is an interprime number because it is at equal distance from previous prime (26989842083) and next prime (26989842097).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 26989842090.

It is not an unprimeable number, because it can be changed into a prime (26989842097) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 897646 + ... + 927225.

It is an arithmetic number, because the mean of its divisors is an integer number (1108609740).

Almost surely, 2^26989842090 is an apocalyptic number.

26989842090 is an abundant number, since it is smaller than the sum of its proper divisors (43961181270).

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

26989842090 is a wasteful number, since it uses less digits than its factorization.

26989842090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1824927.

The product of its (nonzero) digits is 4478976, while the sum is 57.

The spelling of 26989842090 in words is "twenty-six billion, nine hundred eighty-nine million, eight hundred forty-two thousand, ninety".