20632720347 has 12 divisors (see below), whose sum is σ = 29804157240. Its totient is φ = 13754528928.

The previous prime is 20632720291. The next prime is 20632720379. The reversal of 20632720347 is 74302723602.

It is not a de Polignac number, because 20632720347 - 2²⁰ = 20631671771 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20632720247) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 257604 + ... + 328062.

It is an arithmetic number, because the mean of its divisors is an integer number (2483679770).

Almost surely, 2^20632720347 is an apocalyptic number.

20632720347 is a deficient number, since it is larger than the sum of its proper divisors (9171436893).

20632720347 is a wasteful number, since it uses less digits than its factorization.

20632720347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103002 (or 102999 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 36.

The spelling of 20632720347 in words is "twenty billion, six hundred thirty-two million, seven hundred twenty thousand, three hundred forty-seven".