20632857347 has 8 divisors (see below), whose sum is σ = 21967257312. Its totient is φ = 19311868800.

The previous prime is 20632857337. The next prime is 20632857367. The reversal of 20632857347 is 74375823602.

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

It is a cyclic number.

It is not a de Polignac number, because 20632857347 - 2¹² = 20632853251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20632857337) 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, 3349679 + ... + 3355832.

It is an arithmetic number, because the mean of its divisors is an integer number (2745907164).

Almost surely, 2^20632857347 is an apocalyptic number.

20632857347 is a deficient number, since it is larger than the sum of its proper divisors (1334399965).

20632857347 is a wasteful number, since it uses less digits than its factorization.

20632857347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6705709.

The product of its (nonzero) digits is 1693440, while the sum is 47.

The spelling of 20632857347 in words is "twenty billion, six hundred thirty-two million, eight hundred fifty-seven thousand, three hundred forty-seven".