20455732246 has 4 divisors (see below), whose sum is σ = 30683598372. Its totient is φ = 10227866122.

The previous prime is 20455732223. The next prime is 20455732301. The reversal of 20455732246 is 64223755402.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 20455732199 and 20455732208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5113933060 + ... + 5113933063.

It is an arithmetic number, because the mean of its divisors is an integer number (7670899593).

Almost surely, 2^20455732246 is an apocalyptic number.

20455732246 is a deficient number, since it is larger than the sum of its proper divisors (10227866126).

20455732246 is a wasteful number, since it uses less digits than its factorization.

20455732246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10227866125.

The product of its (nonzero) digits is 403200, while the sum is 40.

The spelling of 20455732246 in words is "twenty billion, four hundred fifty-five million, seven hundred thirty-two thousand, two hundred forty-six".