667231378023 has 16 divisors (see below), whose sum is σ = 1017075842816. Its totient is φ = 381146705280.

The previous prime is 667231378003. The next prime is 667231378057. The reversal of 667231378023 is 320873132766.

It is not a de Polignac number, because 667231378023 - 2¹⁴ = 667231361639 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 (667231378003) 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, 5284786 + ... + 5409567.

It is an arithmetic number, because the mean of its divisors is an integer number (63567240176).

Almost surely, 2^667231378023 is an apocalyptic number.

667231378023 is a deficient number, since it is larger than the sum of its proper divisors (349844464793).

667231378023 is a wasteful number, since it uses less digits than its factorization.

667231378023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10697334.

The product of its (nonzero) digits is 1524096, while the sum is 48.

The spelling of 667231378023 in words is "six hundred sixty-seven billion, two hundred thirty-one million, three hundred seventy-eight thousand, twenty-three".