66527518031812 has 48 divisors (see below), whose sum is σ = 123979832589312. Its totient is φ = 31127359301120.

The previous prime is 66527518031789. The next prime is 66527518031869. The reversal of 66527518031812 is 21813081572566.

It is a happy number.

It is a super-3 number, since 3×66527518031812³ (a number of 42 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24327243 + ... + 26923405.

It is an arithmetic number, because the mean of its divisors is an integer number (2582913178944).

Almost surely, 2^{66527518031812} is an apocalyptic number.

It is an amenable number.

66527518031812 is a deficient number, since it is larger than the sum of its proper divisors (57452314557500).

66527518031812 is a wasteful number, since it uses less digits than its factorization.

66527518031812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2598348 (or 2598346 counting only the distinct ones).

The product of its (nonzero) digits is 4838400, while the sum is 55.

The spelling of 66527518031812 in words is "sixty-six trillion, five hundred twenty-seven billion, five hundred eighteen million, thirty-one thousand, eight hundred twelve".