16046663261 has 4 divisors (see below), whose sum is σ = 16047399900. Its totient is φ = 16045926624.

The previous prime is 16046663257. The next prime is 16046663287. The reversal of 16046663261 is 16236664061.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16236664061 = 15581 ⋅1042081.

It can be written as a sum of positive squares in 2 ways, for example, as 14900840761 + 1145822500 = 122069^2 + 33850^2 .

It is a cyclic number.

It is not a de Polignac number, because 16046663261 - 2² = 16046663257 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16046663251) 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, 334616 + ... + 379553.

It is an arithmetic number, because the mean of its divisors is an integer number (4011849975).

Almost surely, 2^16046663261 is an apocalyptic number.

It is an amenable number.

16046663261 is a deficient number, since it is larger than the sum of its proper divisors (736639).

16046663261 is an equidigital number, since it uses as much as digits as its factorization.

16046663261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 736638.

The product of its (nonzero) digits is 186624, while the sum is 41.

The spelling of 16046663261 in words is "sixteen billion, forty-six million, six hundred sixty-three thousand, two hundred sixty-one".