165454145655140 has 96 divisors (see below), whose sum is σ = 349766748142560. Its totient is φ = 65742599356416.

The previous prime is 165454145655083. The next prime is 165454145655157. The reversal of 165454145655140 is 41556541454561.

It can be written as a sum of positive squares in 16 ways, for example, as 503225659456 + 164950919995684 = 709384^2 + 12843322^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8057952314 + ... + 8057972846.

It is an arithmetic number, because the mean of its divisors is an integer number (3643403626485).

Almost surely, 2^{165454145655140} is an apocalyptic number.

165454145655140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165454145655140 is an abundant number, since it is smaller than the sum of its proper divisors (184312602487420).

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

165454145655140 is a wasteful number, since it uses less digits than its factorization.

165454145655140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25041 (or 25039 counting only the distinct ones).

The product of its (nonzero) digits is 28800000, while the sum is 56.

The spelling of 165454145655140 in words is "one hundred sixty-five trillion, four hundred fifty-four billion, one hundred forty-five million, six hundred fifty-five thousand, one hundred forty".