20918622060 has 384 divisors, whose sum is σ = 81300602880. Its totient is φ = 4354560000.

The previous prime is 20918622059. The next prime is 20918622073. The reversal of 20918622060 is 6022681902.

It is a happy number.

20918622060 is a `hidden beast` number, since 20 + 9 + 1 + 8 + 622 + 0 + 6 + 0 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1986810 + ... + 1997310.

It is an arithmetic number, because the mean of its divisors is an integer number (211720320).

Almost surely, 2^20918622060 is an apocalyptic number.

20918622060 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 20918622060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40650301440).

20918622060 is an abundant number, since it is smaller than the sum of its proper divisors (60381980820).

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

20918622060 is a wasteful number, since it uses less digits than its factorization.

20918622060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10574 (or 10566 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The spelling of 20918622060 in words is "twenty billion, nine hundred eighteen million, six hundred twenty-two thousand, sixty".