16065550231 has 4 divisors (see below), whose sum is σ = 16066355200. Its totient is φ = 16064745264.

The previous prime is 16065550219. The next prime is 16065550253. The reversal of 16065550231 is 13205556061.

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

It is a cyclic number.

It is not a de Polignac number, because 16065550231 - 2¹³ = 16065542039 is a prime.

It is a super-2 number, since 2×16065550231² (a number of 21 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 (16065550201) 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, 371766 + ... + 412723.

It is an arithmetic number, because the mean of its divisors is an integer number (4016588800).

Almost surely, 2^16065550231 is an apocalyptic number.

16065550231 is a deficient number, since it is larger than the sum of its proper divisors (804969).

16065550231 is an equidigital number, since it uses as much as digits as its factorization.

16065550231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 804968.

The product of its (nonzero) digits is 27000, while the sum is 34.

The spelling of 16065550231 in words is "sixteen billion, sixty-five million, five hundred fifty thousand, two hundred thirty-one".