20674783960 has 64 divisors (see below), whose sum is σ = 47044177920. Its totient is φ = 8176721280.

The previous prime is 20674783933. The next prime is 20674783979. The reversal of 20674783960 is 6938747602.

It is a junction number, because it is equal to n+sod(n) for n = 20674783898 and 20674783907.

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 15 ways as a sum of consecutive naturals, for example, 2336745 + ... + 2345575.

It is an arithmetic number, because the mean of its divisors is an integer number (735065280).

Almost surely, 2^20674783960 is an apocalyptic number.

20674783960 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20674783960 is an abundant number, since it is smaller than the sum of its proper divisors (26369393960).

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

20674783960 is a wasteful number, since it uses less digits than its factorization.

20674783960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9496 (or 9492 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 52.

The spelling of 20674783960 in words is "twenty billion, six hundred seventy-four million, seven hundred eighty-three thousand, nine hundred sixty".