647018869311 has 6 divisors (see below), whose sum is σ = 934582811240. Its totient is φ = 431345912868.

The previous prime is 647018869309. The next prime is 647018869349. The reversal of 647018869311 is 113968810746.

647018869311 is a `hidden beast` number, since 6 + 470 + 1 + 8 + 86 + 93 + 1 + 1 = 666.

It is not a de Polignac number, because 647018869311 - 2¹ = 647018869309 is a prime.

It is a super-2 number, since 2×647018869311² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (647018869351) 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, 35945492731 + ... + 35945492748.

Almost surely, 2^647018869311 is an apocalyptic number.

647018869311 is a deficient number, since it is larger than the sum of its proper divisors (287563941929).

647018869311 is a wasteful number, since it uses less digits than its factorization.

647018869311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71890985485 (or 71890985482 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 54.

The spelling of 647018869311 in words is "six hundred forty-seven billion, eighteen million, eight hundred sixty-nine thousand, three hundred eleven".