66062772715 has 4 divisors (see below), whose sum is σ = 79275327264. Its totient is φ = 52850218168.

The previous prime is 66062772709. The next prime is 66062772757. The reversal of 66062772715 is 51727726066.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51727726066 = 2 ⋅25863863033.

It is a cyclic number.

It is not a de Polignac number, because 66062772715 - 2⁵ = 66062772683 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6606277267 + ... + 6606277276.

It is an arithmetic number, because the mean of its divisors is an integer number (19818831816).

Almost surely, 2^66062772715 is an apocalyptic number.

66062772715 is a deficient number, since it is larger than the sum of its proper divisors (13212554549).

66062772715 is a wasteful number, since it uses less digits than its factorization.

66062772715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13212554548.

The product of its (nonzero) digits is 1481760, while the sum is 49.

The spelling of 66062772715 in words is "sixty-six billion, sixty-two million, seven hundred seventy-two thousand, seven hundred fifteen".