16506146042 has 4 divisors (see below), whose sum is σ = 24759219066. Its totient is φ = 8253073020.

The previous prime is 16506146017. The next prime is 16506146053. The reversal of 16506146042 is 24064160561.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24064160561 = 7 ⋅3437737223.

It can be written as a sum of positive squares in only one way, i.e., 16282015201 + 224130841 = 127601^2 + 14971^2 .

It is a junction number, because it is equal to n+sod(n) for n = 16506145993 and 16506146011.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4126536509 + ... + 4126536512.

Almost surely, 2^16506146042 is an apocalyptic number.

16506146042 is a deficient number, since it is larger than the sum of its proper divisors (8253073024).

16506146042 is an equidigital number, since it uses as much as digits as its factorization.

16506146042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8253073023.

The product of its (nonzero) digits is 34560, while the sum is 35.

The spelling of 16506146042 in words is "sixteen billion, five hundred six million, one hundred forty-six thousand, forty-two".