664550123362371 has 6 divisors (see below), whose sum is σ = 959905733745660. Its totient is φ = 443033415574908.

The previous prime is 664550123362361. The next prime is 664550123362381. The reversal of 664550123362371 is 173263321055466.

664550123362371 is a `hidden beast` number, since 6 + 6 + 4 + 5 + 5 + 0 + 1 + 2 + 3 + 3 + 623 + 7 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (664550123362361) and next prime (664550123362381).

It is not a de Polignac number, because 664550123362371 - 2⁷ = 664550123362243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (664550123362361) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 36919451297901 + ... + 36919451297918.

It is an arithmetic number, because the mean of its divisors is an integer number (159984288957610).

Almost surely, 2^{664550123362371} is an apocalyptic number.

664550123362371 is a deficient number, since it is larger than the sum of its proper divisors (295355610383289).

664550123362371 is a wasteful number, since it uses less digits than its factorization.

664550123362371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73838902595825 (or 73838902595822 counting only the distinct ones).

The product of its (nonzero) digits is 16329600, while the sum is 54.

The spelling of 664550123362371 in words is "six hundred sixty-four trillion, five hundred fifty billion, one hundred twenty-three million, three hundred sixty-two thousand, three hundred seventy-one".