66411514074 has 16 divisors (see below), whose sum is σ = 139813714080. Its totient is φ = 20972057040.

The previous prime is 66411514073. The next prime is 66411514109. The reversal of 66411514074 is 47041511466.

It is a super-2 number, since 2×66411514074² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (66411514073) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 291278457 + ... + 291278684.

It is an arithmetic number, because the mean of its divisors is an integer number (8738357130).

Almost surely, 2^66411514074 is an apocalyptic number.

66411514074 is an abundant number, since it is smaller than the sum of its proper divisors (73402200006).

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

66411514074 is a wasteful number, since it uses less digits than its factorization.

66411514074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 582557165.

The product of its (nonzero) digits is 80640, while the sum is 39.

The spelling of 66411514074 in words is "sixty-six billion, four hundred eleven million, five hundred fourteen thousand, seventy-four".