20863733790 has 32 divisors (see below), whose sum is σ = 50086545696. Its totient is φ = 5562152960.

The previous prime is 20863733771. The next prime is 20863733809. The reversal of 20863733790 is 9733736802.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20863733771) and next prime (20863733809).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20374 + ... + 205286.

It is an arithmetic number, because the mean of its divisors is an integer number (1565204553).

Almost surely, 2^20863733790 is an apocalyptic number.

20863733790 is an abundant number, since it is smaller than the sum of its proper divisors (29222811906).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20863733790 is a wasteful number, since it uses less digits than its factorization.

20863733790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188684.

The product of its (nonzero) digits is 1143072, while the sum is 48.

The spelling of 20863733790 in words is "twenty billion, eight hundred sixty-three million, seven hundred thirty-three thousand, seven hundred ninety".