47664731465 has 8 divisors (see below), whose sum is σ = 61597499208. Its totient is φ = 35198570880.

The previous prime is 47664731453. The next prime is 47664731483. The reversal of 47664731465 is 56413746674.

It can be written as a sum of positive squares in 4 ways, for example, as 128958736 + 47535772729 = 11356^2 + 218027^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 47664731465 - 2²² = 47660537161 is a prime.

It is a super-2 number, since 2×47664731465² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 366651716 + ... + 366651845.

It is an arithmetic number, because the mean of its divisors is an integer number (7699687401).

Almost surely, 2^47664731465 is an apocalyptic number.

It is an amenable number.

47664731465 is a deficient number, since it is larger than the sum of its proper divisors (13932767743).

47664731465 is a wasteful number, since it uses less digits than its factorization.

47664731465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 733303579.

The product of its digits is 10160640, while the sum is 53.

The spelling of 47664731465 in words is "forty-seven billion, six hundred sixty-four million, seven hundred thirty-one thousand, four hundred sixty-five".