165252551426660 has 48 divisors (see below), whose sum is σ = 347190921529200. Its totient is φ = 66070441242624.

The previous prime is 165252551426639. The next prime is 165252551426719. The reversal of 165252551426660 is 66624155252561.

It can be written as a sum of positive squares in 8 ways, for example, as 44835639267364 + 120416912159296 = 6695942^2 + 10973464^2 .

It is a junction number, because it is equal to n+sod(n) for n = 165252551426596 and 165252551426605.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 668079086 + ... + 668326394.

It is an arithmetic number, because the mean of its divisors is an integer number (7233144198525).

Almost surely, 2^{165252551426660} is an apocalyptic number.

165252551426660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165252551426660 is an abundant number, since it is smaller than the sum of its proper divisors (181938370102540).

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

165252551426660 is a wasteful number, since it uses less digits than its factorization.

165252551426660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262640 (or 262638 counting only the distinct ones).

The product of its (nonzero) digits is 25920000, while the sum is 56.

The spelling of 165252551426660 in words is "one hundred sixty-five trillion, two hundred fifty-two billion, five hundred fifty-one million, four hundred twenty-six thousand, six hundred sixty".