20108226140 has 48 divisors (see below), whose sum is σ = 43305028704. Its totient is φ = 7838438400.

The previous prime is 20108226107. The next prime is 20108226209. The reversal of 20108226140 is 4162280102.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 755255 + ... + 781425.

It is an arithmetic number, because the mean of its divisors is an integer number (902188098).

Almost surely, 2^20108226140 is an apocalyptic number.

20108226140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20108226140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21652514352).

20108226140 is an abundant number, since it is smaller than the sum of its proper divisors (23196802564).

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

20108226140 is a wasteful number, since it uses less digits than its factorization.

20108226140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27158 (or 27156 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 26.

The spelling of 20108226140 in words is "twenty billion, one hundred eight million, two hundred twenty-six thousand, one hundred forty".