168923202120 has 48 divisors (see below), whose sum is σ = 549000408060. Its totient is φ = 45046187136.

The previous prime is 168923202109. The next prime is 168923202121. The reversal of 168923202120 is 21202329861.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 152741835684 + 16181366436 = 390822^2 + 127206^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (168923202121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 234615199 + ... + 234615918.

Almost surely, 2^168923202120 is an apocalyptic number.

168923202120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

168923202120 is an abundant number, since it is smaller than the sum of its proper divisors (380077205940).

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

168923202120 is a wasteful number, since it uses less digits than its factorization.

168923202120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469231134 (or 469231127 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The spelling of 168923202120 in words is "one hundred sixty-eight billion, nine hundred twenty-three million, two hundred two thousand, one hundred twenty".