66014479575 has 144 divisors (see below), whose sum is σ = 134804621952. Its totient is φ = 31758480000.

The previous prime is 66014479561. The next prime is 66014479603. The reversal of 66014479575 is 57597441066.

66014479575 is a `hidden beast` number, since 6 + 60 + 1 + 4 + 4 + 7 + 9 + 575 = 666.

It is not a de Polignac number, because 66014479575 - 2¹¹ = 66014477527 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 8750305 + ... + 8757845.

It is an arithmetic number, because the mean of its divisors is an integer number (936143208).

Almost surely, 2^66014479575 is an apocalyptic number.

66014479575 is an abundant number, since it is smaller than the sum of its proper divisors (68790142377).

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

66014479575 is a wasteful number, since it uses less digits than its factorization.

66014479575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7708 (or 7691 counting only the distinct ones).

The product of its (nonzero) digits is 6350400, while the sum is 54.

The spelling of 66014479575 in words is "sixty-six billion, fourteen million, four hundred seventy-nine thousand, five hundred seventy-five".