20763047940 has 96 divisors (see below), whose sum is σ = 61407768576. Its totient is φ = 5233576320.

The previous prime is 20763047927. The next prime is 20763047957. The reversal of 20763047940 is 4974036702.

It is a super-2 number, since 2×20763047940² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20763047892 and 20763047901.

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, 49822 + ... + 209781.

It is an arithmetic number, because the mean of its divisors is an integer number (639664256).

Almost surely, 2^20763047940 is an apocalyptic number.

20763047940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20763047940 is an abundant number, since it is smaller than the sum of its proper divisors (40644720636).

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

20763047940 is a wasteful number, since it uses less digits than its factorization.

20763047940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259689 (or 259687 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 42.

The spelling of 20763047940 in words is "twenty billion, seven hundred sixty-three million, forty-seven thousand, nine hundred forty".