20773087680 has 56 divisors (see below), whose sum is σ = 65954556432. Its totient is φ = 5539489792.

The previous prime is 20773087669. The next prime is 20773087691. The reversal of 20773087680 is 8678037702.

It is an interprime number because it is at equal distance from previous prime (20773087669) and next prime (20773087691).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

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, 10818357 + ... + 10820276.

Almost surely, 2^20773087680 is an apocalyptic number.

20773087680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20773087680 is an abundant number, since it is smaller than the sum of its proper divisors (45181468752).

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

20773087680 is a wasteful number, since it uses less digits than its factorization.

20773087680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21638653 (or 21638643 counting only the distinct ones).

The product of its (nonzero) digits is 790272, while the sum is 48.

The spelling of 20773087680 in words is "twenty billion, seven hundred seventy-three million, eighty-seven thousand, six hundred eighty".