16509377642 has 8 divisors (see below), whose sum is σ = 24765177600. Its totient is φ = 8254318444.

The previous prime is 16509377641. The next prime is 16509377659. The reversal of 16509377642 is 24677390561.

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

It is not an unprimeable number, because it can be changed into a prime (16509377641) 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, 125642 + ... + 220917.

It is an arithmetic number, because the mean of its divisors is an integer number (3095647200).

Almost surely, 2^16509377642 is an apocalyptic number.

16509377642 is a deficient number, since it is larger than the sum of its proper divisors (8255799958).

16509377642 is a wasteful number, since it uses less digits than its factorization.

16509377642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370380.

The product of its (nonzero) digits is 1905120, while the sum is 50.

The spelling of 16509377642 in words is "sixteen billion, five hundred nine million, three hundred seventy-seven thousand, six hundred forty-two".