20641802361 has 8 divisors (see below), whose sum is σ = 27568199904. Its totient is φ = 13738303200.

The previous prime is 20641802353. The next prime is 20641802371. The reversal of 20641802361 is 16320814602.

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

It is not a de Polignac number, because 20641802361 - 2³ = 20641802353 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20641802371) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5722491 + ... + 5726096.

It is an arithmetic number, because the mean of its divisors is an integer number (3446024988).

Almost surely, 2^20641802361 is an apocalyptic number.

It is an amenable number.

20641802361 is a deficient number, since it is larger than the sum of its proper divisors (6926397543).

20641802361 is a wasteful number, since it uses less digits than its factorization.

20641802361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11449191.

The product of its (nonzero) digits is 13824, while the sum is 33.

The spelling of 20641802361 in words is "twenty billion, six hundred forty-one million, eight hundred two thousand, three hundred sixty-one".