20765224940 has 48 divisors (see below), whose sum is σ = 46256912352. Its totient is φ = 7803134976.

The previous prime is 20765224937. The next prime is 20765224951. The reversal of 20765224940 is 4942256702.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 130154 + ... + 241806.

It is an arithmetic number, because the mean of its divisors is an integer number (963685674).

Almost surely, 2^20765224940 is an apocalyptic number.

20765224940 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 20765224940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23128456176).

20765224940 is an abundant number, since it is smaller than the sum of its proper divisors (25491687412).

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

20765224940 is a wasteful number, since it uses less digits than its factorization.

20765224940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112226 (or 112224 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 41.

The spelling of 20765224940 in words is "twenty billion, seven hundred sixty-five million, two hundred twenty-four thousand, nine hundred forty".