2087920181608 has 8 divisors (see below), whose sum is σ = 3914850340530. Its totient is φ = 1043960090800.

The previous prime is 2087920181593. The next prime is 2087920181671. The reversal of 2087920181608 is 8061810297802.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1780895588004 + 307024593604 = 1334502^2 + 554098^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130495011343 + ... + 130495011358.

Almost surely, 2^{2087920181608} is an apocalyptic number.

It is an amenable number.

2087920181608 is a deficient number, since it is larger than the sum of its proper divisors (1826930158922).

2087920181608 is a wasteful number, since it uses less digits than its factorization.

2087920181608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260990022707 (or 260990022703 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 52.

The spelling of 2087920181608 in words is "two trillion, eighty-seven billion, nine hundred twenty million, one hundred eighty-one thousand, six hundred eight".