16316820217832 has 8 divisors (see below), whose sum is σ = 30594037908450. Its totient is φ = 8158410108912.

The previous prime is 16316820217787. The next prime is 16316820217849. The reversal of 16316820217832 is 23871202861361.

It can be written as a sum of positive squares in only one way, i.e., 16272784874116 + 44035343716 = 4033954^2 + 209846^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×16316820217832² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1019801263607 + ... + 1019801263622.

Almost surely, 2^{16316820217832} is an apocalyptic number.

It is an amenable number.

16316820217832 is a deficient number, since it is larger than the sum of its proper divisors (14277217690618).

16316820217832 is a wasteful number, since it uses less digits than its factorization.

16316820217832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2039602527235 (or 2039602527231 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 50.

The spelling of 16316820217832 in words is "sixteen trillion, three hundred sixteen billion, eight hundred twenty million, two hundred seventeen thousand, eight hundred thirty-two".