168519379964 has 24 divisors (see below), whose sum is σ = 324980132400. Its totient is φ = 75969379584.

The previous prime is 168519379957. The next prime is 168519379967. The reversal of 168519379964 is 469973915861.

It is a junction number, because it is equal to n+sod(n) for n = 168519379894 and 168519379903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168519379967) 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, 37680989 + ... + 37685460.

It is an arithmetic number, because the mean of its divisors is an integer number (13540838850).

Almost surely, 2^168519379964 is an apocalyptic number.

It is an amenable number.

168519379964 is a deficient number, since it is larger than the sum of its proper divisors (156460752436).

168519379964 is a wasteful number, since it uses less digits than its factorization.

168519379964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75366509 (or 75366507 counting only the distinct ones).

The product of its digits is 88179840, while the sum is 68.

The spelling of 168519379964 in words is "one hundred sixty-eight billion, five hundred nineteen million, three hundred seventy-nine thousand, nine hundred sixty-four".