16465256143 has 16 divisors (see below), whose sum is σ = 20039538240. Its totient is φ = 13206099456.

The previous prime is 16465256131. The next prime is 16465256147. The reversal of 16465256143 is 34165256461.

It is a cyclic number.

It is not a de Polignac number, because 16465256143 - 2¹³ = 16465247951 is a prime.

It is a super-2 number, since 2×16465256143² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16465256143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16465256147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 379308 + ... + 420481.

It is an arithmetic number, because the mean of its divisors is an integer number (1252471140).

Almost surely, 2^16465256143 is an apocalyptic number.

16465256143 is a deficient number, since it is larger than the sum of its proper divisors (3574282097).

16465256143 is a wasteful number, since it uses less digits than its factorization.

16465256143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 799986.

The product of its digits is 518400, while the sum is 43.

The spelling of 16465256143 in words is "sixteen billion, four hundred sixty-five million, two hundred fifty-six thousand, one hundred forty-three".