16506105043 has 8 divisors (see below), whose sum is σ = 17256333600. Its totient is φ = 15788436664.

The previous prime is 16506105019. The next prime is 16506105101. The reversal of 16506105043 is 34050160561.

It is not a de Polignac number, because 16506105043 - 2¹³ = 16506096851 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16506104996 and 16506105014.

It is not an unprimeable number, because it can be changed into a prime (16506105743) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 666148 + ... + 690481.

It is an arithmetic number, because the mean of its divisors is an integer number (2157041700).

Almost surely, 2^16506105043 is an apocalyptic number.

16506105043 is a deficient number, since it is larger than the sum of its proper divisors (750228557).

16506105043 is an frugal number, since it uses more digits than its factorization.

16506105043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1356698 (or 1356652 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 31.

The spelling of 16506105043 in words is "sixteen billion, five hundred six million, one hundred five thousand, forty-three".