2147247861517 has 32 divisors (see below), whose sum is σ = 2525226762240. Its totient is φ = 1805204520000.

The previous prime is 2147247861467. The next prime is 2147247861527. The reversal of 2147247861517 is 7151687427412.

It is a cyclic number.

It is not a de Polignac number, because 2147247861517 - 2¹¹ = 2147247859469 is a prime.

It is a super-2 number, since 2×2147247861517² (a number of 25 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 (2147247861527) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 782388 + ... + 2215090.

It is an arithmetic number, because the mean of its divisors is an integer number (78913336320).

Almost surely, 2^{2147247861517} is an apocalyptic number.

It is an amenable number.

2147247861517 is a deficient number, since it is larger than the sum of its proper divisors (377978900723).

2147247861517 is a wasteful number, since it uses less digits than its factorization.

2147247861517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1432905.

The product of its digits is 5268480, while the sum is 55.

The spelling of 2147247861517 in words is "two trillion, one hundred forty-seven billion, two hundred forty-seven million, eight hundred sixty-one thousand, five hundred seventeen".