63845267017 has 12 divisors (see below), whose sum is σ = 74349851520. Its totient is φ = 54664928136.

The previous prime is 63845266949. The next prime is 63845267111. The reversal of 63845267017 is 71076254836.

It is not a de Polignac number, because 63845267017 - 2¹⁹ = 63844742729 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is not an unprimeable number, because it can be changed into a prime (63845267417) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 663873 + ... + 753934.

It is an arithmetic number, because the mean of its divisors is an integer number (6195820960).

Almost surely, 2^63845267017 is an apocalyptic number.

It is an amenable number.

63845267017 is a deficient number, since it is larger than the sum of its proper divisors (10504584503).

63845267017 is a wasteful number, since it uses less digits than its factorization.

63845267017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1418740 (or 1418733 counting only the distinct ones).

The product of its (nonzero) digits is 1693440, while the sum is 49.

The spelling of 63845267017 in words is "sixty-three billion, eight hundred forty-five million, two hundred sixty-seven thousand, seventeen".