642717673416 has 96 divisors (see below), whose sum is σ = 2142392266560. Its totient is φ = 169507956096.

The previous prime is 642717673369. The next prime is 642717673457. The reversal of 642717673416 is 614376717246.

It is a happy number.

642717673416 is a `hidden beast` number, since 6 + 427 + 176 + 7 + 3 + 41 + 6 = 666.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49040890 + ... + 49053993.

It is an arithmetic number, because the mean of its divisors is an integer number (22316586110).

Almost surely, 2^642717673416 is an apocalyptic number.

It is an amenable number.

642717673416 is an abundant number, since it is smaller than the sum of its proper divisors (1499674593144).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

642717673416 is a wasteful number, since it uses less digits than its factorization.

642717673416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98094915 (or 98094908 counting only the distinct ones).

The product of its digits is 7112448, while the sum is 54.

The spelling of 642717673416 in words is "six hundred forty-two billion, seven hundred seventeen million, six hundred seventy-three thousand, four hundred sixteen".