216565100634 has 32 divisors (see below), whose sum is σ = 440904384000. Its totient is φ = 70895075504.

The previous prime is 216565100539. The next prime is 216565100669. The reversal of 216565100634 is 436001565612.

It is a super-2 number, since 2×216565100634² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 216565100592 and 216565100601.

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, 60547 + ... + 660905.

It is an arithmetic number, because the mean of its divisors is an integer number (13778262000).

Almost surely, 2^216565100634 is an apocalyptic number.

216565100634 is an abundant number, since it is smaller than the sum of its proper divisors (224339283366).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

216565100634 is a wasteful number, since it uses less digits than its factorization.

216565100634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601442.

The product of its (nonzero) digits is 129600, while the sum is 39.

The spelling of 216565100634 in words is "two hundred sixteen billion, five hundred sixty-five million, one hundred thousand, six hundred thirty-four".