16507274137 has 4 divisors (see below), whose sum is σ = 16507802916. Its totient is φ = 16506745360.

The previous prime is 16507274131. The next prime is 16507274167. The reversal of 16507274137 is 73147270561.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 73147270561 = 457 ⋅160059673.

It can be written as a sum of positive squares in 2 ways, for example, as 3324560281 + 13182713856 = 57659^2 + 114816^2 .

It is a cyclic number.

It is not a de Polignac number, because 16507274137 - 2⁷ = 16507274009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16507274093 and 16507274102.

It is not an unprimeable number, because it can be changed into a prime (16507274131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 214414 + ... + 281047.

It is an arithmetic number, because the mean of its divisors is an integer number (4126950729).

Almost surely, 2^16507274137 is an apocalyptic number.

It is an amenable number.

16507274137 is a deficient number, since it is larger than the sum of its proper divisors (528779).

16507274137 is an equidigital number, since it uses as much as digits as its factorization.

16507274137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528778.

The product of its (nonzero) digits is 246960, while the sum is 43.

The spelling of 16507274137 in words is "sixteen billion, five hundred seven million, two hundred seventy-four thousand, one hundred thirty-seven".