20346045881 has 8 divisors (see below), whose sum is σ = 24054438720. Its totient is φ = 16838106768.

The previous prime is 20346045877. The next prime is 20346045887. The reversal of 20346045881 is 18854064302.

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

It is not a de Polignac number, because 20346045881 - 2² = 20346045877 is a prime.

It is a super-2 number, since 2×20346045881² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20346045887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50113211 + ... + 50113616.

It is an arithmetic number, because the mean of its divisors is an integer number (3006804840).

Almost surely, 2^20346045881 is an apocalyptic number.

It is an amenable number.

20346045881 is a deficient number, since it is larger than the sum of its proper divisors (3708392839).

20346045881 is a wasteful number, since it uses less digits than its factorization.

20346045881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100226863.

The product of its (nonzero) digits is 184320, while the sum is 41.

The spelling of 20346045881 in words is "twenty billion, three hundred forty-six million, forty-five thousand, eight hundred eighty-one".