669641040357 has 16 divisors (see below), whose sum is σ = 893843731968. Its totient is φ = 445932979200.

The previous prime is 669641040349. The next prime is 669641040371. The reversal of 669641040357 is 753040146966.

It is not a de Polignac number, because 669641040357 - 2³ = 669641040349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669641040857) 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, 36382357 + ... + 36400757.

It is an arithmetic number, because the mean of its divisors is an integer number (55865233248).

Almost surely, 2^669641040357 is an apocalyptic number.

It is an amenable number.

669641040357 is a deficient number, since it is larger than the sum of its proper divisors (224202691611).

669641040357 is a wasteful number, since it uses less digits than its factorization.

669641040357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31180.

The product of its (nonzero) digits is 3265920, while the sum is 51.

The spelling of 669641040357 in words is "six hundred sixty-nine billion, six hundred forty-one million, forty thousand, three hundred fifty-seven".