20246351564 has 6 divisors (see below), whose sum is σ = 35431115244. Its totient is φ = 10123175780.

The previous prime is 20246351563. The next prime is 20246351579. The reversal of 20246351564 is 46515364202.

It is not an unprimeable number, because it can be changed into a prime (20246351561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2530793942 + ... + 2530793949.

It is an arithmetic number, because the mean of its divisors is an integer number (5905185874).

Almost surely, 2^20246351564 is an apocalyptic number.

It is an amenable number.

20246351564 is a deficient number, since it is larger than the sum of its proper divisors (15184763680).

20246351564 is a wasteful number, since it uses less digits than its factorization.

20246351564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5061587895 (or 5061587893 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 38.

The spelling of 20246351564 in words is "twenty billion, two hundred forty-six million, three hundred fifty-one thousand, five hundred sixty-four".