667137341377 has 6 divisors (see below), whose sum is σ = 722403156822. Its totient is φ = 615819084192.

The previous prime is 667137341363. The next prime is 667137341389. The reversal of 667137341377 is 773143731766.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 16454732176 + 650682609201 = 128276^2 + 806649^2 .

It is a de Polignac number, because none of the positive numbers 2^k-667137341377 is a prime.

It is a super-2 number, since 2×667137341377² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (667137341077) 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, 1973778948 + ... + 1973779285.

It is an arithmetic number, because the mean of its divisors is an integer number (120400526137).

Almost surely, 2^667137341377 is an apocalyptic number.

It is an amenable number.

667137341377 is a deficient number, since it is larger than the sum of its proper divisors (55265815445).

667137341377 is a wasteful number, since it uses less digits than its factorization.

667137341377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3947558259 (or 3947558246 counting only the distinct ones).

The product of its digits is 9335088, while the sum is 55.

The spelling of 667137341377 in words is "six hundred sixty-seven billion, one hundred thirty-seven million, three hundred forty-one thousand, three hundred seventy-seven".