164603518443831 has 16 divisors (see below), whose sum is σ = 219834633718784. Its totient is φ = 109554043878144.

The previous prime is 164603518443811. The next prime is 164603518443937. The reversal of 164603518443831 is 138344815306461.

It is not a de Polignac number, because 164603518443831 - 2¹⁵ = 164603518411063 is a prime.

It is a super-2 number, since 2×164603518443831² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164603518443811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 308635260 + ... + 309168126.

It is an arithmetic number, because the mean of its divisors is an integer number (13739664607424).

Almost surely, 2^{164603518443831} is an apocalyptic number.

164603518443831 is a deficient number, since it is larger than the sum of its proper divisors (55231115274953).

164603518443831 is a wasteful number, since it uses less digits than its factorization.

164603518443831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 703110.

The product of its (nonzero) digits is 19906560, while the sum is 57.

The spelling of 164603518443831 in words is "one hundred sixty-four trillion, six hundred three billion, five hundred eighteen million, four hundred forty-three thousand, eight hundred thirty-one".