20965040712 has 384 divisors, whose sum is σ = 73538150400. Its totient is φ = 5238259200.

The previous prime is 20965040699. The next prime is 20965040801. The reversal of 20965040712 is 21704056902.

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 95 ways as a sum of consecutive naturals, for example, 15893989 + ... + 15895307.

It is an arithmetic number, because the mean of its divisors is an integer number (191505600).

Almost surely, 2^20965040712 is an apocalyptic number.

20965040712 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 20965040712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36769075200).

20965040712 is an abundant number, since it is smaller than the sum of its proper divisors (52573109688).

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

20965040712 is a wasteful number, since it uses less digits than its factorization.

20965040712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1457 (or 1450 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The spelling of 20965040712 in words is "twenty billion, nine hundred sixty-five million, forty thousand, seven hundred twelve".