16315642641 has 8 divisors (see below), whose sum is σ = 22700024640. Its totient is φ = 10404177872.

The previous prime is 16315642633. The next prime is 16315642663. The reversal of 16315642641 is 14624651361.

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 16315642641 - 2³ = 16315642633 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16315642641.

It is not an unprimeable number, because it can be changed into a prime (16315642241) 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, 118229226 + ... + 118229363.

It is an arithmetic number, because the mean of its divisors is an integer number (2837503080).

Almost surely, 2^16315642641 is an apocalyptic number.

It is an amenable number.

16315642641 is a deficient number, since it is larger than the sum of its proper divisors (6384381999).

16315642641 is a wasteful number, since it uses less digits than its factorization.

16315642641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236458615.

The product of its digits is 103680, while the sum is 39.

The spelling of 16315642641 in words is "sixteen billion, three hundred fifteen million, six hundred forty-two thousand, six hundred forty-one".