20011510416 has 40 divisors (see below), whose sum is σ = 51825370464. Its totient is φ = 6653862400.

The previous prime is 20011510397. The next prime is 20011510417. The reversal of 20011510416 is 61401511002.

It is a junction number, because it is equal to n+sod(n) for n = 20011510392 and 20011510401.

It is not an unprimeable number, because it can be changed into a prime (20011510417) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 500586 + ... + 539081.

Almost surely, 2^20011510416 is an apocalyptic number.

It is an amenable number.

20011510416 is an abundant number, since it is smaller than the sum of its proper divisors (31813860048).

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

20011510416 is a wasteful number, since it uses less digits than its factorization.

20011510416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1040079 (or 1040073 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 21.

The spelling of 20011510416 in words is "twenty billion, eleven million, five hundred ten thousand, four hundred sixteen".