16408961642 has 8 divisors (see below), whose sum is σ = 24633440832. Its totient is φ = 8197814700.

The previous prime is 16408961617. The next prime is 16408961651. The reversal of 16408961642 is 24616980461.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3329984 + ... + 3334907.

It is an arithmetic number, because the mean of its divisors is an integer number (3079180104).

Almost surely, 2^16408961642 is an apocalyptic number.

16408961642 is a deficient number, since it is larger than the sum of its proper divisors (8224479190).

16408961642 is a wasteful number, since it uses less digits than its factorization.

16408961642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6666124.

The product of its (nonzero) digits is 497664, while the sum is 47.

The spelling of 16408961642 in words is "sixteen billion, four hundred eight million, nine hundred sixty-one thousand, six hundred forty-two".