1451146165565 has 16 divisors (see below), whose sum is σ = 1744943396400. Its totient is φ = 1158538655232.

The previous prime is 1451146165537. The next prime is 1451146165571. The reversal of 1451146165565 is 5655616411541.

It can be written as a sum of positive squares in 8 ways, for example, as 50831309764 + 1400314855801 = 225458^2 + 1183349^2 .

It is a cyclic number.

It is not a de Polignac number, because 1451146165565 - 2¹⁴ = 1451146149181 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55144631 + ... + 55170939.

It is an arithmetic number, because the mean of its divisors is an integer number (109058962275).

Almost surely, 2^{1451146165565} is an apocalyptic number.

It is an amenable number.

1451146165565 is a deficient number, since it is larger than the sum of its proper divisors (293797230835).

1451146165565 is a wasteful number, since it uses less digits than its factorization.

1451146165565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48496.

The product of its digits is 2160000, while the sum is 50.

The spelling of 1451146165565 in words is "one trillion, four hundred fifty-one billion, one hundred forty-six million, one hundred sixty-five thousand, five hundred sixty-five".