20011650015 has 16 divisors (see below), whose sum is σ = 36592731648. Its totient is φ = 9148182816.

The previous prime is 20011649963. The next prime is 20011650077. The reversal of 20011650015 is 51005611002.

It is not a de Polignac number, because 20011650015 - 2⁹ = 20011649503 is a prime.

It is a super-2 number, since 2×20011650015² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 20011649973 and 20011650000.

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 15 ways as a sum of consecutive naturals, for example, 95293467 + ... + 95293676.

It is an arithmetic number, because the mean of its divisors is an integer number (2287045728).

Almost surely, 2^20011650015 is an apocalyptic number.

20011650015 is a deficient number, since it is larger than the sum of its proper divisors (16581081633).

20011650015 is a wasteful number, since it uses less digits than its factorization.

20011650015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190587158.

The product of its (nonzero) digits is 300, while the sum is 21.

The spelling of 20011650015 in words is "twenty billion, eleven million, six hundred fifty thousand, fifteen".