66145414470 has 64 divisors (see below), whose sum is σ = 160870993920. Its totient is φ = 17404242048.

The previous prime is 66145414463. The next prime is 66145414471. The reversal of 66145414470 is 7441454166.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66145414471) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 817291 + ... + 894569.

It is an arithmetic number, because the mean of its divisors is an integer number (2513609280).

Almost surely, 2^66145414470 is an apocalyptic number.

66145414470 is an abundant number, since it is smaller than the sum of its proper divisors (94725579450).

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

66145414470 is a wasteful number, since it uses less digits than its factorization.

66145414470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77669.

The product of its (nonzero) digits is 322560, while the sum is 42.

The spelling of 66145414470 in words is "sixty-six billion, one hundred forty-five million, four hundred fourteen thousand, four hundred seventy".