20035122660 has 384 divisors, whose sum is σ = 75911270400. Its totient is φ = 4284887040.

The previous prime is 20035122631. The next prime is 20035122661. The reversal of 20035122660 is 6622153002.

It is a super-2 number, since 2×20035122660² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (20035122661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 5959380 + ... + 5962740.

It is an arithmetic number, because the mean of its divisors is an integer number (197685600).

Almost surely, 2^20035122660 is an apocalyptic number.

20035122660 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 20035122660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37955635200).

20035122660 is an abundant number, since it is smaller than the sum of its proper divisors (55876147740).

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

20035122660 is a wasteful number, since it uses less digits than its factorization.

20035122660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3488 (or 3480 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

Adding to 20035122660 its reverse (6622153002), we get a palindrome (26657275662).

The spelling of 20035122660 in words is "twenty billion, thirty-five million, one hundred twenty-two thousand, six hundred sixty".