66151129066704 has 120 divisors (see below), whose sum is σ = 201967458424992. Its totient is φ = 20045195516160.

The previous prime is 66151129066691. The next prime is 66151129066733. The reversal of 66151129066704 is 40766092115166.

66151129066704 is a `hidden beast` number, since 6 + 61 + 511 + 2 + 9 + 0 + 6 + 67 + 0 + 4 = 666.

It is a super-3 number, since 3×66151129066704³ (a number of 42 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 53695194 + ... + 54913350.

Almost surely, 2^{66151129066704} is an apocalyptic number.

It is an amenable number.

66151129066704 is an abundant number, since it is smaller than the sum of its proper divisors (135816329358288).

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

66151129066704 is a wasteful number, since it uses less digits than its factorization.

66151129066704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1252465 (or 1252456 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 54.

The spelling of 66151129066704 in words is "sixty-six trillion, one hundred fifty-one billion, one hundred twenty-nine million, sixty-six thousand, seven hundred four".