616510111066 has 8 divisors (see below), whose sum is σ = 924787638324. Its totient is φ = 308247564960.

The previous prime is 616510111037. The next prime is 616510111069. The reversal of 616510111066 is 660111015616.

It can be written as a sum of positive squares in 2 ways, for example, as 554993710441 + 61516400625 = 744979^2 + 248025^2 .

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

It is a super-2 number, since 2×616510111066² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (616510111069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3641835 + ... + 3807358.

Almost surely, 2^616510111066 is an apocalyptic number.

616510111066 is a deficient number, since it is larger than the sum of its proper divisors (308277527258).

616510111066 is a wasteful number, since it uses less digits than its factorization.

616510111066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7490576.

The product of its (nonzero) digits is 6480, while the sum is 34.

The spelling of 616510111066 in words is "six hundred sixteen billion, five hundred ten million, one hundred eleven thousand, sixty-six".