165898768964 has 24 divisors (see below), whose sum is σ = 306973443840. Its totient is φ = 78231226464.

The previous prime is 165898768957. The next prime is 165898768991. The reversal of 165898768964 is 469867898561.

It is a super-3 number, since 3×165898768964³ (a number of 35 digits) contains 333 as substring.

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, 4877399 + ... + 4911294.

It is an arithmetic number, because the mean of its divisors is an integer number (12790560160).

Almost surely, 2^165898768964 is an apocalyptic number.

It is an amenable number.

165898768964 is a deficient number, since it is larger than the sum of its proper divisors (141074674876).

165898768964 is a wasteful number, since it uses less digits than its factorization.

165898768964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9788939 (or 9788937 counting only the distinct ones).

The product of its digits is 1254113280, while the sum is 77.

The spelling of 165898768964 in words is "one hundred sixty-five billion, eight hundred ninety-eight million, seven hundred sixty-eight thousand, nine hundred sixty-four".