170105947428 has 12 divisors (see below), whose sum is σ = 396913877360. Its totient is φ = 56701982472.

The previous prime is 170105947423. The next prime is 170105947463. The reversal of 170105947428 is 824749501071.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (170105947423) 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, 7087747798 + ... + 7087747821.

Almost surely, 2^170105947428 is an apocalyptic number.

It is an amenable number.

170105947428 is an abundant number, since it is smaller than the sum of its proper divisors (226807929932).

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

170105947428 is a wasteful number, since it uses less digits than its factorization.

170105947428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14175495626 (or 14175495624 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 48.

The spelling of 170105947428 in words is "one hundred seventy billion, one hundred five million, nine hundred forty-seven thousand, four hundred twenty-eight".