66152520165452 has 18 divisors (see below), whose sum is σ = 134667630337212. Its totient is φ = 28351080070824.

The previous prime is 66152520165451. The next prime is 66152520165533. The reversal of 66152520165452 is 25456102525166.

It is a self number, because there is not a number n which added to its sum of digits gives 66152520165452.

It is not an unprimeable number, because it can be changed into a prime (66152520165451) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 168756428798 + ... + 168756429189.

It is an arithmetic number, because the mean of its divisors is an integer number (7481535018734).

Almost surely, 2^{66152520165452} is an apocalyptic number.

It is an amenable number.

66152520165452 is an abundant number, since it is smaller than the sum of its proper divisors (68515110171760).

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

66152520165452 is a wasteful number, since it uses less digits than its factorization.

66152520165452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337512858005 (or 337512857996 counting only the distinct ones).

The product of its (nonzero) digits is 4320000, while the sum is 50.

The spelling of 66152520165452 in words is "sixty-six trillion, one hundred fifty-two billion, five hundred twenty million, one hundred sixty-five thousand, four hundred fifty-two".