20674500000 has 672 divisors, whose sum is σ = 85048911360. Its totient is φ = 4272000000.

The previous prime is 20674499999. The next prime is 20674500043. The reversal of 20674500000 is 547602.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (672).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 115499911 + ... + 115500089.

It is an arithmetic number, because the mean of its divisors is an integer number (126560880).

Almost surely, 2^20674500000 is an apocalyptic number.

20674500000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20674500000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42524455680).

20674500000 is an abundant number, since it is smaller than the sum of its proper divisors (64374411360).

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

20674500000 is an equidigital number, since it uses as much as digits as its factorization.

20674500000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240 (or 207 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 24.

The spelling of 20674500000 in words is "twenty billion, six hundred seventy-four million, five hundred thousand".