20049677816 has 32 divisors (see below), whose sum is σ = 42985850880. Its totient is φ = 8588268000.

The previous prime is 20049677803. The next prime is 20049677839. The reversal of 20049677816 is 61877694002.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17501 + ... + 201011.

It is an arithmetic number, because the mean of its divisors is an integer number (1343307840).

Almost surely, 2^20049677816 is an apocalyptic number.

It is an amenable number.

20049677816 is an abundant number, since it is smaller than the sum of its proper divisors (22936173064).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20049677816 is a wasteful number, since it uses less digits than its factorization.

20049677816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185475 (or 185471 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 50.

The spelling of 20049677816 in words is "twenty billion, forty-nine million, six hundred seventy-seven thousand, eight hundred sixteen".