16506146451 has 4 divisors (see below), whose sum is σ = 22008195272. Its totient is φ = 11004097632.

The previous prime is 16506146411. The next prime is 16506146467. The reversal of 16506146451 is 15464160561.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 16506146451 - 2³³ = 7916211859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16506146401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2751024406 + ... + 2751024411.

It is an arithmetic number, because the mean of its divisors is an integer number (5502048818).

Almost surely, 2^16506146451 is an apocalyptic number.

16506146451 is a deficient number, since it is larger than the sum of its proper divisors (5502048821).

16506146451 is an equidigital number, since it uses as much as digits as its factorization.

16506146451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5502048820.

The product of its (nonzero) digits is 86400, while the sum is 39.

The spelling of 16506146451 in words is "sixteen billion, five hundred six million, one hundred forty-six thousand, four hundred fifty-one".