165012198642 has 48 divisors (see below), whose sum is σ = 360116734848. Its totient is φ = 54606998880.

The previous prime is 165012198641. The next prime is 165012198649. The reversal of 165012198642 is 246891210561.

165012198642 is a `hidden beast` number, since 1 + 6 + 501 + 21 + 9 + 86 + 42 = 666.

It is not an unprimeable number, because it can be changed into a prime (165012198641) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1320708 + ... + 1440240.

It is an arithmetic number, because the mean of its divisors is an integer number (7502431976).

Almost surely, 2^165012198642 is an apocalyptic number.

165012198642 is an abundant number, since it is smaller than the sum of its proper divisors (195104536206).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165012198642 is a wasteful number, since it uses less digits than its factorization.

165012198642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120095 (or 120092 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The spelling of 165012198642 in words is "one hundred sixty-five billion, twelve million, one hundred ninety-eight thousand, six hundred forty-two".