16506125051 has 6 divisors (see below), whose sum is σ = 17873496540. Its totient is φ = 15236422968.

The previous prime is 16506125047. The next prime is 16506125059. The reversal of 16506125051 is 15052160561.

It is not a de Polignac number, because 16506125051 - 2² = 16506125047 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16506124999 and 16506125017.

It is not an unprimeable number, because it can be changed into a prime (16506125059) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 48834521 + ... + 48834858.

It is an arithmetic number, because the mean of its divisors is an integer number (2978916090).

Almost surely, 2^16506125051 is an apocalyptic number.

16506125051 is a deficient number, since it is larger than the sum of its proper divisors (1367371489).

16506125051 is an equidigital number, since it uses as much as digits as its factorization.

16506125051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97669405 (or 97669392 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 32.

The spelling of 16506125051 in words is "sixteen billion, five hundred six million, one hundred twenty-five thousand, fifty-one".