20049178416 has 160 divisors (see below), whose sum is σ = 53539478016. Its totient is φ = 6462720000.

The previous prime is 20049178411. The next prime is 20049178441. The reversal of 20049178416 is 61487194002.

It is not an unprimeable number, because it can be changed into a prime (20049178411) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 60571371 + ... + 60571701.

Almost surely, 2^20049178416 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20049178416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26769739008).

20049178416 is an abundant number, since it is smaller than the sum of its proper divisors (33490299600).

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

20049178416 is a wasteful number, since it uses less digits than its factorization.

20049178416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 691 (or 685 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 42.

The spelling of 20049178416 in words is "twenty billion, forty-nine million, one hundred seventy-eight thousand, four hundred sixteen".