20946437020 has 24 divisors (see below), whose sum is σ = 43990408224. Its totient is φ = 8378024256.

The previous prime is 20946437009. The next prime is 20946437041. The reversal of 20946437020 is 2073464902.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 431289 + ... + 477391.

It is an arithmetic number, because the mean of its divisors is an integer number (1832933676).

Almost surely, 2^20946437020 is an apocalyptic number.

20946437020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20946437020 is an abundant number, since it is smaller than the sum of its proper divisors (23043971204).

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

20946437020 is a wasteful number, since it uses less digits than its factorization.

20946437020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68829 (or 68827 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 37.

The spelling of 20946437020 in words is "twenty billion, nine hundred forty-six million, four hundred thirty-seven thousand, twenty".