20049503040 has 336 divisors, whose sum is σ = 78986164608. Its totient is φ = 4572721152.

The previous prime is 20049503039. The next prime is 20049503069. The reversal of 20049503040 is 4030594002.

It is a tau number, because it is divible by the number of its divisors (336).

It is a junction number, because it is equal to n+sod(n) for n = 20049502995 and 20049503013.

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 47 ways as a sum of consecutive naturals, for example, 13163719 + ... + 13165241.

Almost surely, 2^20049503040 is an apocalyptic number.

20049503040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20049503040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39493082304).

20049503040 is an abundant number, since it is smaller than the sum of its proper divisors (58936661568).

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

20049503040 is a wasteful number, since it uses less digits than its factorization.

20049503040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2206 (or 2193 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The spelling of 20049503040 in words is "twenty billion, forty-nine million, five hundred three thousand, forty".