20410205990 has 16 divisors (see below), whose sum is σ = 37255813920. Its totient is φ = 8049095040.

The previous prime is 20410205983. The next prime is 20410206013. The reversal of 20410205990 is 9950201402.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14372675 + ... + 14374094.

It is an arithmetic number, because the mean of its divisors is an integer number (2328488370).

Almost surely, 2^20410205990 is an apocalyptic number.

20410205990 is a deficient number, since it is larger than the sum of its proper divisors (16845607930).

20410205990 is a wasteful number, since it uses less digits than its factorization.

20410205990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28746847.

The product of its (nonzero) digits is 6480, while the sum is 32.

The spelling of 20410205990 in words is "twenty billion, four hundred ten million, two hundred five thousand, nine hundred ninety".