216262564145 has 8 divisors (see below), whose sum is σ = 261256789800. Its totient is φ = 171848909440.

The previous prime is 216262564127. The next prime is 216262564153. The reversal of 216262564145 is 541465262612.

It can be written as a sum of positive squares in 4 ways, for example, as 46478185744 + 169784378401 = 215588^2 + 412049^2 .

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

It is not a de Polignac number, because 216262564145 - 2⁸ = 216262563889 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 216262564096 and 216262564105.

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, 145141916 + ... + 145143405.

It is an arithmetic number, because the mean of its divisors is an integer number (32657098725).

Almost surely, 2^216262564145 is an apocalyptic number.

It is an amenable number.

216262564145 is a deficient number, since it is larger than the sum of its proper divisors (44994225655).

216262564145 is a wasteful number, since it uses less digits than its factorization.

216262564145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290285475.

The product of its digits is 691200, while the sum is 44.

The spelling of 216262564145 in words is "two hundred sixteen billion, two hundred sixty-two million, five hundred sixty-four thousand, one hundred forty-five".