164680681915 has 8 divisors (see below), whose sum is σ = 197621422848. Its totient is φ = 131741475840.

The previous prime is 164680681897. The next prime is 164680681967. The reversal of 164680681915 is 519186086461.

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

It is a de Polignac number, because none of the positive numbers 2^k-164680681915 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132742 + ... + 589051.

It is an arithmetic number, because the mean of its divisors is an integer number (24702677856).

Almost surely, 2^164680681915 is an apocalyptic number.

164680681915 is a deficient number, since it is larger than the sum of its proper divisors (32940740933).

164680681915 is an equidigital number, since it uses as much as digits as its factorization.

164680681915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 767429.

The product of its (nonzero) digits is 2488320, while the sum is 55.

The spelling of 164680681915 in words is "one hundred sixty-four billion, six hundred eighty million, six hundred eighty-one thousand, nine hundred fifteen".