667376531267051 has 4 divisors (see below), whose sum is σ = 669194995930272. Its totient is φ = 665558066603832.

The previous prime is 667376531266961. The next prime is 667376531267081. The reversal of 667376531267051 is 150762135673766.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 667376531267051 - 2⁴⁶ = 597007787089387 is a prime.

It is a super-2 number, since 2×667376531267051² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (667376531267081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 909232331060 + ... + 909232331793.

It is an arithmetic number, because the mean of its divisors is an integer number (167298748982568).

Almost surely, 2^{667376531267051} is an apocalyptic number.

667376531267051 is a deficient number, since it is larger than the sum of its proper divisors (1818464663221).

667376531267051 is a wasteful number, since it uses less digits than its factorization.

667376531267051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1818464663220.

The product of its (nonzero) digits is 200037600, while the sum is 65.

The spelling of 667376531267051 in words is "six hundred sixty-seven trillion, three hundred seventy-six billion, five hundred thirty-one million, two hundred sixty-seven thousand, fifty-one".