1665047452514 has 4 divisors (see below), whose sum is σ = 2497571178774. Its totient is φ = 832523726256.

The previous prime is 1665047452487. The next prime is 1665047452543. The reversal of 1665047452514 is 4152547405661.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1603832280625 + 61215171889 = 1266425^2 + 247417^2 .

It is a super-2 number, since 2×1665047452514² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 416261863127 + ... + 416261863130.

Almost surely, 2^{1665047452514} is an apocalyptic number.

1665047452514 is a deficient number, since it is larger than the sum of its proper divisors (832523726260).

1665047452514 is an equidigital number, since it uses as much as digits as its factorization.

1665047452514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 832523726259.

The product of its (nonzero) digits is 4032000, while the sum is 50.

The spelling of 1665047452514 in words is "one trillion, six hundred sixty-five billion, forty-seven million, four hundred fifty-two thousand, five hundred fourteen".