16432151561 has 8 divisors (see below), whose sum is σ = 18787018560. Its totient is φ = 14079138768.

The previous prime is 16432151557. The next prime is 16432151563. The reversal of 16432151561 is 16515123461.

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 16432151561 - 2² = 16432151557 is a prime.

It is a super-3 number, since 3×16432151561³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16432151563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 444506 + ... + 480051.

It is an arithmetic number, because the mean of its divisors is an integer number (2348377320).

Almost surely, 2^16432151561 is an apocalyptic number.

It is an amenable number.

16432151561 is a deficient number, since it is larger than the sum of its proper divisors (2354866999).

16432151561 is an equidigital number, since it uses as much as digits as its factorization.

16432151561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 927103.

The product of its digits is 21600, while the sum is 35.

The spelling of 16432151561 in words is "sixteen billion, four hundred thirty-two million, one hundred fifty-one thousand, five hundred sixty-one".