16261175352421 has 16 divisors (see below), whose sum is σ = 17342122593600. Its totient is φ = 15194058018048.

The previous prime is 16261175352419. The next prime is 16261175352439. The reversal of 16261175352421 is 12425357116261.

It is a cyclic number.

It is not a de Polignac number, because 16261175352421 - 2¹ = 16261175352419 is a prime.

It is a super-2 number, since 2×16261175352421² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16261175352481) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93116575 + ... + 93291043.

It is an arithmetic number, because the mean of its divisors is an integer number (1083882662100).

Almost surely, 2^{16261175352421} is an apocalyptic number.

It is an amenable number.

16261175352421 is a deficient number, since it is larger than the sum of its proper divisors (1080947241179).

16261175352421 is a wasteful number, since it uses less digits than its factorization.

16261175352421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214068.

The product of its digits is 604800, while the sum is 46.

The spelling of 16261175352421 in words is "sixteen trillion, two hundred sixty-one billion, one hundred seventy-five million, three hundred fifty-two thousand, four hundred twenty-one".