664477146641151 has 80 divisors (see below), whose sum is σ = 1009527719622400. Its totient is φ = 435464331299712.

The previous prime is 664477146641101. The next prime is 664477146641153. The reversal of 664477146641151 is 151146641774466.

664477146641151 is a `hidden beast` number, since 6 + 6 + 4 + 4 + 77 + 146 + 6 + 411 + 5 + 1 = 666.

It is not a de Polignac number, because 664477146641151 - 2²¹ = 664477144543999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664477146641153) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 20234373990 + ... + 20234406828.

It is an arithmetic number, because the mean of its divisors is an integer number (12619096495280).

Almost surely, 2^{664477146641151} is an apocalyptic number.

664477146641151 is a deficient number, since it is larger than the sum of its proper divisors (345050572981249).

664477146641151 is a wasteful number, since it uses less digits than its factorization.

664477146641151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40570 (or 40561 counting only the distinct ones).

The product of its digits is 81285120, while the sum is 63.

The spelling of 664477146641151 in words is "six hundred sixty-four trillion, four hundred seventy-seven billion, one hundred forty-six million, six hundred forty-one thousand, one hundred fifty-one".