20651515167 has 8 divisors (see below), whose sum is σ = 27583578880. Its totient is φ = 13743564120.

The previous prime is 20651515121. The next prime is 20651515217. The reversal of 20651515167 is 76151515602.

It is a happy number.

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

It is not a de Polignac number, because 20651515167 - 2¹⁶ = 20651449631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20651515267) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6026167 + ... + 6029592.

It is an arithmetic number, because the mean of its divisors is an integer number (3447947360).

Almost surely, 2^20651515167 is an apocalyptic number.

20651515167 is a deficient number, since it is larger than the sum of its proper divisors (6932063713).

20651515167 is a wasteful number, since it uses less digits than its factorization.

20651515167 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12056333.

The product of its (nonzero) digits is 63000, while the sum is 39.

The spelling of 20651515167 in words is "twenty billion, six hundred fifty-one million, five hundred fifteen thousand, one hundred sixty-seven".