17155428720 has 40 divisors (see below), whose sum is σ = 53181829776. Its totient is φ = 4574780928.

The previous prime is 17155428713. The next prime is 17155428793. The reversal of 17155428720 is 2782455171.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent 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, 35740237 + ... + 35740716.

Almost surely, 2^17155428720 is an apocalyptic number.

17155428720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

17155428720 is an abundant number, since it is smaller than the sum of its proper divisors (36026401056).

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

17155428720 is a wasteful number, since it uses less digits than its factorization.

17155428720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71480969 (or 71480963 counting only the distinct ones).

The product of its (nonzero) digits is 156800, while the sum is 42.

The spelling of 17155428720 in words is "seventeen billion, one hundred fifty-five million, four hundred twenty-eight thousand, seven hundred twenty".