418693872247 has 6 divisors (see below), whose sum is σ = 487052055528. Its totient is φ = 358880461884.

The previous prime is 418693872203. The next prime is 418693872263. The reversal of 418693872247 is 742278396814.

It is a de Polignac number, because none of the positive numbers 2^k-418693872247 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 (418693875247) 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, 4272386403 + ... + 4272386500.

It is an arithmetic number, because the mean of its divisors is an integer number (81175342588).

Almost surely, 2^418693872247 is an apocalyptic number.

418693872247 is a deficient number, since it is larger than the sum of its proper divisors (68358183281).

418693872247 is an equidigital number, since it uses as much as digits as its factorization.

418693872247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8544772917 (or 8544772910 counting only the distinct ones).

The product of its digits is 32514048, while the sum is 61.

The spelling of 418693872247 in words is "four hundred eighteen billion, six hundred ninety-three million, eight hundred seventy-two thousand, two hundred forty-seven".