66460078027 has 48 divisors (see below), whose sum is σ = 79427174400. Its totient is φ = 55432641600.

The previous prime is 66460077991. The next prime is 66460078049. The reversal of 66460078027 is 72087006466.

It is not a de Polignac number, because 66460078027 - 2¹⁹ = 66459553739 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66460078127) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 154199502 + ... + 154199932.

It is an arithmetic number, because the mean of its divisors is an integer number (1654732800).

Almost surely, 2^66460078027 is an apocalyptic number.

66460078027 is a deficient number, since it is larger than the sum of its proper divisors (12967096373).

66460078027 is a wasteful number, since it uses less digits than its factorization.

66460078027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 992 (or 985 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 46.

The spelling of 66460078027 in words is "sixty-six billion, four hundred sixty million, seventy-eight thousand, twenty-seven".