1659918465108 has 18 divisors (see below), whose sum is σ = 4195905009114. Its totient is φ = 553306155024.

The previous prime is 1659918465091. The next prime is 1659918465131. The reversal of 1659918465108 is 8015648199561.

1659918465108 is a `hidden beast` number, since 1 + 6 + 59 + 9 + 18 + 465 + 108 = 666.

It can be written as a sum of positive squares in only one way, i.e., 868676192784 + 791242272324 = 932028^2 + 889518^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×1659918465108² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23054423091 + ... + 23054423162.

Almost surely, 2^{1659918465108} is an apocalyptic number.

1659918465108 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1659918465108 is an abundant number, since it is smaller than the sum of its proper divisors (2535986544006).

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

1659918465108 is a wasteful number, since it uses less digits than its factorization.

1659918465108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46108846263 (or 46108846258 counting only the distinct ones).

The product of its (nonzero) digits is 18662400, while the sum is 63.

The spelling of 1659918465108 in words is "one trillion, six hundred fifty-nine billion, nine hundred eighteen million, four hundred sixty-five thousand, one hundred eight".