20413316885 has 8 divisors (see below), whose sum is σ = 26380286520. Its totient is φ = 15074449344.

The previous prime is 20413316867. The next prime is 20413316893. The reversal of 20413316885 is 58861331402.

It can be written as a sum of positive squares in 4 ways, for example, as 3784956484 + 16628360401 = 61522^2 + 128951^2 .

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 20413316885 - 2⁸ = 20413316629 is a prime.

It is a super-2 number, since 2×20413316885² (a number of 21 digits) contains 22 as substring.

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, 157025450 + ... + 157025579.

It is an arithmetic number, because the mean of its divisors is an integer number (3297535815).

Almost surely, 2^20413316885 is an apocalyptic number.

It is an amenable number.

20413316885 is a deficient number, since it is larger than the sum of its proper divisors (5966969635).

20413316885 is a wasteful number, since it uses less digits than its factorization.

20413316885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314051047.

The product of its (nonzero) digits is 138240, while the sum is 41.

The spelling of 20413316885 in words is "twenty billion, four hundred thirteen million, three hundred sixteen thousand, eight hundred eighty-five".