26940210990 has 128 divisors (see below), whose sum is σ = 80800727040. Its totient is φ = 5584771200.

The previous prime is 26940210931. The next prime is 26940211003. The reversal of 26940210990 is 9901204962.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 982081 + ... + 1009139.

It is an arithmetic number, because the mean of its divisors is an integer number (631255680).

Almost surely, 2^26940210990 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26940210990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40400363520).

26940210990 is an abundant number, since it is smaller than the sum of its proper divisors (53860516050).

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

26940210990 is a wasteful number, since it uses less digits than its factorization.

26940210990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27518.

The product of its (nonzero) digits is 69984, while the sum is 42.

The spelling of 26940210990 in words is "twenty-six billion, nine hundred forty million, two hundred ten thousand, nine hundred ninety".