20667161073 has 8 divisors (see below), whose sum is σ = 29675923648. Its totient is φ = 12718252944.

The previous prime is 20667161063. The next prime is 20667161093. The reversal of 20667161073 is 37016176602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20667161073 - 2⁵ = 20667161041 is a prime.

It is a super-2 number, since 2×20667161073² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 529927207 = 20667161073 / (2 + 0 + 6 + 6 + 7 + 1 + 6 + 1 + 0 + 7 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20667161063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 264963565 + ... + 264963642.

It is an arithmetic number, because the mean of its divisors is an integer number (3709490456).

Almost surely, 2^20667161073 is an apocalyptic number.

It is an amenable number.

20667161073 is a deficient number, since it is larger than the sum of its proper divisors (9008762575).

20667161073 is a wasteful number, since it uses less digits than its factorization.

20667161073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 529927223.

The product of its (nonzero) digits is 63504, while the sum is 39.

The spelling of 20667161073 in words is "twenty billion, six hundred sixty-seven million, one hundred sixty-one thousand, seventy-three".