20672015161 has 8 divisors (see below), whose sum is σ = 24439821120. Its totient is φ = 17107874448.

The previous prime is 20672015149. The next prime is 20672015167. The reversal of 20672015161 is 16151027602.

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

It is not a de Polignac number, because 20672015161 - 2⁵ = 20672015129 is a prime.

It is a super-2 number, since 2×20672015161² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20672015167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50916091 + ... + 50916496.

It is an arithmetic number, because the mean of its divisors is an integer number (3054977640).

Almost surely, 2^20672015161 is an apocalyptic number.

It is an amenable number.

20672015161 is a deficient number, since it is larger than the sum of its proper divisors (3767805959).

20672015161 is a wasteful number, since it uses less digits than its factorization.

20672015161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101832623.

The product of its (nonzero) digits is 5040, while the sum is 31.

The spelling of 20672015161 in words is "twenty billion, six hundred seventy-two million, fifteen thousand, one hundred sixty-one".