812666060457 has 8 divisors (see below), whose sum is σ = 1083675972480. Its totient is φ = 541716761040.

The previous prime is 812666060449. The next prime is 812666060473. The reversal of 812666060457 is 754060666218.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 812666060457 - 2³ = 812666060449 is a prime.

It is a super-2 number, since 2×812666060457² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (812666040457) 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, 15121857 + ... + 15175502.

It is an arithmetic number, because the mean of its divisors is an integer number (135459496560).

Almost surely, 2^812666060457 is an apocalyptic number.

It is an amenable number.

812666060457 is a deficient number, since it is larger than the sum of its proper divisors (271009912023).

812666060457 is a wasteful number, since it uses less digits than its factorization.

812666060457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30306303.

The product of its (nonzero) digits is 2903040, while the sum is 51.

The spelling of 812666060457 in words is "eight hundred twelve billion, six hundred sixty-six million, sixty thousand, four hundred fifty-seven".