20167919012 has 12 divisors (see below), whose sum is σ = 36828374016. Its totient is φ = 9645526440.

The previous prime is 20167919011. The next prime is 20167919021. The reversal of 20167919012 is 21091976102.

It is a super-2 number, since 2×20167919012² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20167919011) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 109608164 + ... + 109608347.

It is an arithmetic number, because the mean of its divisors is an integer number (3069031168).

Almost surely, 2^20167919012 is an apocalyptic number.

It is an amenable number.

20167919012 is a deficient number, since it is larger than the sum of its proper divisors (16660455004).

20167919012 is a wasteful number, since it uses less digits than its factorization.

20167919012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219216538 (or 219216536 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 38.

The spelling of 20167919012 in words is "twenty billion, one hundred sixty-seven million, nine hundred nineteen thousand, twelve".