16506433412 has 18 divisors (see below), whose sum is σ = 33602382702. Its totient is φ = 7074185664.

The previous prime is 16506433393. The next prime is 16506433423. The reversal of 16506433412 is 21433460561.

It can be written as a sum of positive squares in only one way, i.e., 8618151556 + 7888281856 = 92834^2 + 88816^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 42108053 + ... + 42108444.

It is an arithmetic number, because the mean of its divisors is an integer number (1866799039).

Almost surely, 2^16506433412 is an apocalyptic number.

It is an amenable number.

16506433412 is an abundant number, since it is smaller than the sum of its proper divisors (17095949290).

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

16506433412 is a wasteful number, since it uses less digits than its factorization.

16506433412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84216515 (or 84216506 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 35.

Adding to 16506433412 its reverse (21433460561), we get a palindrome (37939893973).

The spelling of 16506433412 in words is "sixteen billion, five hundred six million, four hundred thirty-three thousand, four hundred twelve".