16354351261 has 4 divisors (see below), whose sum is σ = 16358312412. Its totient is φ = 16350390112.

The previous prime is 16354351253. The next prime is 16354351267. The reversal of 16354351261 is 16215345361.

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

It can be written as a sum of positive squares in 2 ways, for example, as 14070467161 + 2283884100 = 118619^2 + 47790^2 .

It is a cyclic number.

It is not a de Polignac number, because 16354351261 - 2³ = 16354351253 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16354351261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16354351267) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1974376 + ... + 1982641.

It is an arithmetic number, because the mean of its divisors is an integer number (4089578103).

Almost surely, 2^16354351261 is an apocalyptic number.

It is an amenable number.

16354351261 is a deficient number, since it is larger than the sum of its proper divisors (3961151).

16354351261 is an equidigital number, since it uses as much as digits as its factorization.

16354351261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3961150.

The product of its digits is 64800, while the sum is 37.

The spelling of 16354351261 in words is "sixteen billion, three hundred fifty-four million, three hundred fifty-one thousand, two hundred sixty-one".