20673480740 has 24 divisors (see below), whose sum is σ = 47361065472. Its totient is φ = 7517629280.

The previous prime is 20673480739. The next prime is 20673480767. The reversal of 20673480740 is 4708437602.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46984964 + ... + 46985403.

It is an arithmetic number, because the mean of its divisors is an integer number (1973377728).

Almost surely, 2^20673480740 is an apocalyptic number.

20673480740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20673480740 is an abundant number, since it is smaller than the sum of its proper divisors (26687584732).

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

20673480740 is a wasteful number, since it uses less digits than its factorization.

20673480740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93970387 (or 93970385 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 41.

The spelling of 20673480740 in words is "twenty billion, six hundred seventy-three million, four hundred eighty thousand, seven hundred forty".