20880709005 has 64 divisors (see below), whose sum is σ = 36625155840. Its totient is φ = 10095667200.

The previous prime is 20880708997. The next prime is 20880709009. The reversal of 20880709005 is 50090708802.

It is not a de Polignac number, because 20880709005 - 2³ = 20880708997 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20880709009) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 12976641 + ... + 12978249.

It is an arithmetic number, because the mean of its divisors is an integer number (572268060).

Almost surely, 2^20880709005 is an apocalyptic number.

It is an amenable number.

20880709005 is a deficient number, since it is larger than the sum of its proper divisors (15744446835).

20880709005 is a wasteful number, since it uses less digits than its factorization.

20880709005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2782.

The product of its (nonzero) digits is 40320, while the sum is 39.

The spelling of 20880709005 in words is "twenty billion, eight hundred eighty million, seven hundred nine thousand, five".