165650451612 has 24 divisors (see below), whose sum is σ = 395506505856. Its totient is φ = 53932705008.

The previous prime is 165650451611. The next prime is 165650451641. The reversal of 165650451612 is 216154056561.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165650451611) 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, 160513488 + ... + 160514519.

It is an arithmetic number, because the mean of its divisors is an integer number (16479437744).

Almost surely, 2^165650451612 is an apocalyptic number.

165650451612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

165650451612 is an abundant number, since it is smaller than the sum of its proper divisors (229856054244).

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

165650451612 is a wasteful number, since it uses less digits than its factorization.

165650451612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321028057 (or 321028055 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 42.

The spelling of 165650451612 in words is "one hundred sixty-five billion, six hundred fifty million, four hundred fifty-one thousand, six hundred twelve".