667231077888 has 160 divisors (see below), whose sum is σ = 2079001161600. Its totient is φ = 210704467968.

The previous prime is 667231077883. The next prime is 667231077893. The reversal of 667231077888 is 888770132766.

It is an interprime number because it is at equal distance from previous prime (667231077883) and next prime (667231077893).

It is a super-2 number, since 2×667231077888² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667231077883) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1007506 + ... + 1532817.

It is an arithmetic number, because the mean of its divisors is an integer number (12993757260).

Almost surely, 2^667231077888 is an apocalyptic number.

It is an amenable number.

667231077888 is an abundant number, since it is smaller than the sum of its proper divisors (1411770083712).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

667231077888 is a wasteful number, since it uses less digits than its factorization.

667231077888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2540369 (or 2540347 counting only the distinct ones).

The product of its (nonzero) digits is 37933056, while the sum is 63.

The spelling of 667231077888 in words is "six hundred sixty-seven billion, two hundred thirty-one million, seventy-seven thousand, eight hundred eighty-eight".