170421508616 has 8 divisors (see below), whose sum is σ = 319540328670. Its totient is φ = 85210754304.

The previous prime is 170421508573. The next prime is 170421508627. The reversal of 170421508616 is 616805124071.

It can be written as a sum of positive squares in only one way, i.e., 111495888100 + 58925620516 = 333910^2 + 242746^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10651344281 + ... + 10651344296.

Almost surely, 2^170421508616 is an apocalyptic number.

It is an amenable number.

170421508616 is a deficient number, since it is larger than the sum of its proper divisors (149118820054).

170421508616 is a wasteful number, since it uses less digits than its factorization.

170421508616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21302688583 (or 21302688579 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 41.

The spelling of 170421508616 in words is "one hundred seventy billion, four hundred twenty-one million, five hundred eight thousand, six hundred sixteen".