20409624194 has 16 divisors (see below), whose sum is σ = 31636928256. Its totient is φ = 9864709200.

The previous prime is 20409624127. The next prime is 20409624203. The reversal of 20409624194 is 49142690402.

It is a Curzon 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, 125237 + ... + 237704.

It is an arithmetic number, because the mean of its divisors is an integer number (1977308016).

Almost surely, 2^20409624194 is an apocalyptic number.

20409624194 is a deficient number, since it is larger than the sum of its proper divisors (11227304062).

20409624194 is a wasteful number, since it uses less digits than its factorization.

20409624194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363881.

The product of its (nonzero) digits is 124416, while the sum is 41.

The spelling of 20409624194 in words is "twenty billion, four hundred nine million, six hundred twenty-four thousand, one hundred ninety-four".