20202246646 has 8 divisors (see below), whose sum is σ = 30668471064. Its totient is φ = 9979422960.

The previous prime is 20202246619. The next prime is 20202246661. The reversal of 20202246646 is 64664220202.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60849975 + ... + 60850306.

It is an arithmetic number, because the mean of its divisors is an integer number (3833558883).

Almost surely, 2^20202246646 is an apocalyptic number.

20202246646 is a deficient number, since it is larger than the sum of its proper divisors (10466224418).

20202246646 is a wasteful number, since it uses less digits than its factorization.

20202246646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121700366.

The product of its (nonzero) digits is 55296, while the sum is 34.

Adding to 20202246646 its reverse (64664220202), we get a palindrome (84866466848).

The spelling of 20202246646 in words is "twenty billion, two hundred two million, two hundred forty-six thousand, six hundred forty-six".