216410541646 has 16 divisors (see below), whose sum is σ = 359034538464. Its totient is φ = 97182280224.

The previous prime is 216410541629. The next prime is 216410541653. The reversal of 216410541646 is 646145014612.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 216410541599 and 216410541608.

It is a congruent number.

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, 112478530 + ... + 112480453.

It is an arithmetic number, because the mean of its divisors is an integer number (22439658654).

Almost surely, 2^216410541646 is an apocalyptic number.

216410541646 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

216410541646 is a deficient number, since it is larger than the sum of its proper divisors (142623996818).

216410541646 is a wasteful number, since it uses less digits than its factorization.

216410541646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224959035.

The product of its (nonzero) digits is 138240, while the sum is 40.

The spelling of 216410541646 in words is "two hundred sixteen billion, four hundred ten million, five hundred forty-one thousand, six hundred forty-six".