20507673999838 has 8 divisors (see below), whose sum is σ = 30761909742960. Its totient is φ = 10253704085520.

The previous prime is 20507673999823. The next prime is 20507673999847. The reversal of 20507673999838 is 83899937670502.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66264223 + ... + 66572986.

It is an arithmetic number, because the mean of its divisors is an integer number (3845238717870).

Almost surely, 2^{20507673999838} is an apocalyptic number.

20507673999838 is a deficient number, since it is larger than the sum of its proper divisors (10254235743122).

20507673999838 is a wasteful number, since it uses less digits than its factorization.

20507673999838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132914402.

The product of its (nonzero) digits is 1234517760, while the sum is 76.

The spelling of 20507673999838 in words is "twenty trillion, five hundred seven billion, six hundred seventy-three million, nine hundred ninety-nine thousand, eight hundred thirty-eight".