16742778305 has 8 divisors (see below), whose sum is σ = 21917818944. Its totient is φ = 12176566000.

The previous prime is 16742778293. The next prime is 16742778331. The reversal of 16742778305 is 50387724761.

It is a happy number.

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

It is not a de Polignac number, because 16742778305 - 2⁴ = 16742778289 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152207021 + ... + 152207130.

It is an arithmetic number, because the mean of its divisors is an integer number (2739727368).

Almost surely, 2^16742778305 is an apocalyptic number.

It is an amenable number.

16742778305 is a deficient number, since it is larger than the sum of its proper divisors (5175040639).

16742778305 is a wasteful number, since it uses less digits than its factorization.

16742778305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304414167.

The product of its (nonzero) digits is 1975680, while the sum is 50.

The spelling of 16742778305 in words is "sixteen billion, seven hundred forty-two million, seven hundred seventy-eight thousand, three hundred five".