16126561247 has 8 divisors (see below), whose sum is σ = 16184358960. Its totient is φ = 16068856320.

The previous prime is 16126561211. The next prime is 16126561271. The reversal of 16126561247 is 74216562161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16126561247 - 2⁶ = 16126561183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16126561147) 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, 334847 + ... + 379967.

It is an arithmetic number, because the mean of its divisors is an integer number (2023044870).

Almost surely, 2^16126561247 is an apocalyptic number.

16126561247 is a deficient number, since it is larger than the sum of its proper divisors (57797713).

16126561247 is an equidigital number, since it uses as much as digits as its factorization.

16126561247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46393.

The product of its digits is 120960, while the sum is 41.

The spelling of 16126561247 in words is "sixteen billion, one hundred twenty-six million, five hundred sixty-one thousand, two hundred forty-seven".