20880034641 has 6 divisors (see below), whose sum is σ = 30160050050. Its totient is φ = 13920023088.

The previous prime is 20880034543. The next prime is 20880034691. The reversal of 20880034641 is 14643008802.

20880034641 is a `hidden beast` number, since 2 + 0 + 8 + 8 + 0 + 0 + 3 + 4 + 641 = 666.

It can be written as a sum of positive squares in only one way, i.e., 19560819600 + 1319215041 = 139860^2 + 36321^2 .

It is not a de Polignac number, because 20880034641 - 2⁹ = 20880034129 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20880034596 and 20880034605.

It is not an unprimeable number, because it can be changed into a prime (20880034691) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1160001916 + ... + 1160001933.

Almost surely, 2^20880034641 is an apocalyptic number.

It is an amenable number.

20880034641 is a deficient number, since it is larger than the sum of its proper divisors (9280015409).

20880034641 is a wasteful number, since it uses less digits than its factorization.

20880034641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2320003855 (or 2320003852 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

The spelling of 20880034641 in words is "twenty billion, eight hundred eighty million, thirty-four thousand, six hundred forty-one".