167649442623 has 48 divisors (see below), whose sum is σ = 288134159040. Its totient is φ = 92878359552.

The previous prime is 167649442607. The next prime is 167649442651. The reversal of 167649442623 is 326244946761.

167649442623 is a `hidden beast` number, since 1 + 6 + 7 + 6 + 4 + 9 + 4 + 4 + 2 + 623 = 666.

It is not a de Polignac number, because 167649442623 - 2⁴ = 167649442607 is a prime.

It is a super-2 number, since 2×167649442623² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 167649442623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (167649443623) 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 47 ways as a sum of consecutive naturals, for example, 1786608 + ... + 1878101.

It is an arithmetic number, because the mean of its divisors is an integer number (6002794980).

Almost surely, 2^167649442623 is an apocalyptic number.

167649442623 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

167649442623 is a deficient number, since it is larger than the sum of its proper divisors (120484716417).

167649442623 is a wasteful number, since it uses less digits than its factorization.

167649442623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3664768 (or 3664765 counting only the distinct ones).

The product of its digits is 10450944, while the sum is 54.

The spelling of 167649442623 in words is "one hundred sixty-seven billion, six hundred forty-nine million, four hundred forty-two thousand, six hundred twenty-three".