667252240384 has 26 divisors (see below), whose sum is σ = 1334341585580. Its totient is φ = 333626118144.

The previous prime is 667252240381. The next prime is 667252240387. The reversal of 667252240384 is 483042252766.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (667252240381) and next prime (667252240387).

It is not an unprimeable number, because it can be changed into a prime (667252240381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81447594 + ... + 81455785.

Almost surely, 2^667252240384 is an apocalyptic number.

667252240384 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

667252240384 is a deficient number, since it is larger than the sum of its proper divisors (667089345196).

667252240384 is an equidigital number, since it uses as much as digits as its factorization.

667252240384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162903403 (or 162903381 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 49.

The spelling of 667252240384 in words is "six hundred sixty-seven billion, two hundred fifty-two million, two hundred forty thousand, three hundred eighty-four".