17157116620 has 24 divisors (see below), whose sum is σ = 41177080224. Its totient is φ = 5882439936.

The previous prime is 17157116591. The next prime is 17157116629. The reversal of 17157116620 is 2661175171.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 17157116620.

It is not an unprimeable number, because it can be changed into a prime (17157116629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61275277 + ... + 61275556.

It is an arithmetic number, because the mean of its divisors is an integer number (1715711676).

Almost surely, 2^17157116620 is an apocalyptic number.

17157116620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

17157116620 is an abundant number, since it is smaller than the sum of its proper divisors (24019963604).

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

17157116620 is a wasteful number, since it uses less digits than its factorization.

17157116620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122550849 (or 122550847 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 37.

It can be divided in two parts, 171571 and 16620, that added together give a triangular number (188191 = T₆₁₃).

The spelling of 17157116620 in words is "seventeen billion, one hundred fifty-seven million, one hundred sixteen thousand, six hundred twenty".