1617617768080 has 20 divisors (see below), whose sum is σ = 3760961310972. Its totient is φ = 647047107200.

The previous prime is 1617617768071. The next prime is 1617617768083. The reversal of 1617617768080 is 808677167161.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 808423967376 + 809193800704 = 899124^2 + 899552^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (1617617768083) 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, 10110110971 + ... + 10110111130.

Almost surely, 2^{1617617768080} is an apocalyptic number.

1617617768080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1617617768080 is an abundant number, since it is smaller than the sum of its proper divisors (2143343542892).

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

1617617768080 is a wasteful number, since it uses less digits than its factorization.

1617617768080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20220222114 (or 20220222108 counting only the distinct ones).

The product of its (nonzero) digits is 4741632, while the sum is 58.

The spelling of 1617617768080 in words is "one trillion, six hundred seventeen billion, six hundred seventeen million, seven hundred sixty-eight thousand, eighty".