20080680645 has 8 divisors (see below), whose sum is σ = 32129089056. Its totient is φ = 10709696336.

The previous prime is 20080680629. The next prime is 20080680661. The reversal of 20080680645 is 54608608002.

It is an interprime number because it is at equal distance from previous prime (20080680629) and next prime (20080680661).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20080680645 - 2⁴ = 20080680629 is a prime.

It is a Curzon number.

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, 669356007 + ... + 669356036.

It is an arithmetic number, because the mean of its divisors is an integer number (4016136132).

Almost surely, 2^20080680645 is an apocalyptic number.

It is an amenable number.

20080680645 is a deficient number, since it is larger than the sum of its proper divisors (12048408411).

20080680645 is a wasteful number, since it uses less digits than its factorization.

20080680645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1338712051.

The product of its (nonzero) digits is 92160, while the sum is 39.

The spelling of 20080680645 in words is "twenty billion, eighty million, six hundred eighty thousand, six hundred forty-five".