20910292000 has 192 divisors, whose sum is σ = 55690637184. Its totient is φ = 7670246400.

The previous prime is 20910291973. The next prime is 20910292027. The reversal of 20910292000 is 29201902.

It is an interprime number because it is at equal distance from previous prime (20910291973) and next prime (20910292027).

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8474767 + ... + 8477233.

It is an arithmetic number, because the mean of its divisors is an integer number (290055402).

Almost surely, 2^20910292000 is an apocalyptic number.

20910292000 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 20910292000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27845318592).

20910292000 is an abundant number, since it is smaller than the sum of its proper divisors (34780345184).

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

20910292000 is a wasteful number, since it uses less digits than its factorization.

20910292000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2668 (or 2650 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 25.

Adding to 20910292000 its reverse (29201902), we get a palindrome (20939493902).

The spelling of 20910292000 in words is "twenty billion, nine hundred ten million, two hundred ninety-two thousand".