16542804641 has 8 divisors (see below), whose sum is σ = 18466387104. Its totient is φ = 14689170720.

The previous prime is 16542804623. The next prime is 16542804661. The reversal of 16542804641 is 14640824561.

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 16542804641 - 2¹⁰ = 16542803617 is a prime.

It is a super-2 number, since 2×16542804641² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16542804661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17486636 + ... + 17487581.

It is an arithmetic number, because the mean of its divisors is an integer number (2308298388).

Almost surely, 2^16542804641 is an apocalyptic number.

16542804641 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

16542804641 is a deficient number, since it is larger than the sum of its proper divisors (1923582463).

16542804641 is a wasteful number, since it uses less digits than its factorization.

16542804641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34974271.

The product of its (nonzero) digits is 184320, while the sum is 41.

The spelling of 16542804641 in words is "sixteen billion, five hundred forty-two million, eight hundred four thousand, six hundred forty-one".