20011012415 has 4 divisors (see below), whose sum is σ = 24013214904. Its totient is φ = 16008809928.

The previous prime is 20011012381. The next prime is 20011012421. The reversal of 20011012415 is 51421011002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20011012415 - 2¹² = 20011008319 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20011012393 and 20011012402.

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, 2001101237 + ... + 2001101246.

It is an arithmetic number, because the mean of its divisors is an integer number (6003303726).

Almost surely, 2^20011012415 is an apocalyptic number.

20011012415 is a deficient number, since it is larger than the sum of its proper divisors (4002202489).

20011012415 is an equidigital number, since it uses as much as digits as its factorization.

20011012415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4002202488.

The product of its (nonzero) digits is 80, while the sum is 17.

Adding to 20011012415 its reverse (51421011002), we get a palindrome (71432023417).

The spelling of 20011012415 in words is "twenty billion, eleven million, twelve thousand, four hundred fifteen".