20827055920 has 40 divisors (see below), whose sum is σ = 52824989520. Its totient is φ = 7573474560.

The previous prime is 20827055869. The next prime is 20827055971. The reversal of 20827055920 is 2955072802.

It is an interprime number because it is at equal distance from previous prime (20827055869) and next prime (20827055971).

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (40).

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 7 ways as a sum of consecutive naturals, for example, 11832675 + ... + 11834434.

It is an arithmetic number, because the mean of its divisors is an integer number (1320624738).

Almost surely, 2^20827055920 is an apocalyptic number.

20827055920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20827055920 is an abundant number, since it is smaller than the sum of its proper divisors (31997933600).

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

20827055920 is a wasteful number, since it uses less digits than its factorization.

20827055920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23667133 (or 23667127 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 40.

The spelling of 20827055920 in words is "twenty billion, eight hundred twenty-seven million, fifty-five thousand, nine hundred twenty".