20903673347 has 8 divisors (see below), whose sum is σ = 20947390560. Its totient is φ = 20859981760.

The previous prime is 20903673313. The next prime is 20903673353. The reversal of 20903673347 is 74337630902.

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-20903673347 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20903673298 and 20903673307.

It is not an unprimeable number, because it can be changed into a prime (20903673397) 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, 2990018 + ... + 2997000.

It is an arithmetic number, because the mean of its divisors is an integer number (2618423820).

Almost surely, 2^20903673347 is an apocalyptic number.

20903673347 is a deficient number, since it is larger than the sum of its proper divisors (43717213).

20903673347 is an equidigital number, since it uses as much as digits as its factorization.

20903673347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12813.

The product of its (nonzero) digits is 571536, while the sum is 44.

The spelling of 20903673347 in words is "twenty billion, nine hundred three million, six hundred seventy-three thousand, three hundred forty-seven".