20873332747 has 8 divisors (see below), whose sum is σ = 20971560960. Its totient is φ = 20775146280.

The previous prime is 20873332723. The next prime is 20873332769. The reversal of 20873332747 is 74723337802.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20873332747 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20873332697 and 20873332706.

It is not an unprimeable number, because it can be changed into a prime (20873332787) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1491372 + ... + 1505302.

It is an arithmetic number, because the mean of its divisors is an integer number (2621445120).

Almost surely, 2^20873332747 is an apocalyptic number.

20873332747 is a deficient number, since it is larger than the sum of its proper divisors (98228213).

20873332747 is a wasteful number, since it uses less digits than its factorization.

20873332747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20873.

The product of its (nonzero) digits is 1185408, while the sum is 46.

The spelling of 20873332747 in words is "twenty billion, eight hundred seventy-three million, three hundred thirty-two thousand, seven hundred forty-seven".