165452123250 has 48 divisors (see below), whose sum is σ = 447382547352. Its totient is φ = 44120565600.

The previous prime is 165452123231. The next prime is 165452123257. The reversal of 165452123250 is 52321254561.

165452123250 is a `hidden beast` number, since 1 + 6 + 54 + 521 + 2 + 32 + 50 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 55685144529 + 109766978721 = 235977^2 + 331311^2 .

It is a super-3 number, since 3×165452123250³ (a number of 35 digits) contains 333 as substring.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (165452123257) 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, 36764889 + ... + 36769388.

Almost surely, 2^165452123250 is an apocalyptic number.

165452123250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

165452123250 is an abundant number, since it is smaller than the sum of its proper divisors (281930424102).

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

165452123250 is a wasteful number, since it uses less digits than its factorization.

165452123250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73534300 (or 73534287 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The spelling of 165452123250 in words is "one hundred sixty-five billion, four hundred fifty-two million, one hundred twenty-three thousand, two hundred fifty".