20692506912 has 192 divisors, whose sum is σ = 67946231808. Its totient is φ = 5356800000.

The previous prime is 20692506881. The next prime is 20692506937. The reversal of 20692506912 is 21960529602.

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2294412 + ... + 2303412.

It is an arithmetic number, because the mean of its divisors is an integer number (353886624).

Almost surely, 2^20692506912 is an apocalyptic number.

20692506912 is a gapful number since it is divisible by the number (22) 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 20692506912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33973115904).

20692506912 is an abundant number, since it is smaller than the sum of its proper divisors (47253724896).

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

20692506912 is a wasteful number, since it uses less digits than its factorization.

20692506912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9343 (or 9335 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 42.

The spelling of 20692506912 in words is "twenty billion, six hundred ninety-two million, five hundred six thousand, nine hundred twelve".