3999540176505 has 12 divisors (see below), whose sum is σ = 6932536306020. Its totient is φ = 2133088094112.

The previous prime is 3999540176497. The next prime is 3999540176521. The reversal of 3999540176505 is 5056710459993.

3999540176505 is a `hidden beast` number, since 3 + 9 + 9 + 9 + 54 + 0 + 1 + 76 + 505 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2263691766249 + 1735848410256 = 1504557^2 + 1317516^2 .

It is not a de Polignac number, because 3999540176505 - 2³ = 3999540176497 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44439335250 + ... + 44439335339.

It is an arithmetic number, because the mean of its divisors is an integer number (577711358835).

Almost surely, 2^{3999540176505} is an apocalyptic number.

It is an amenable number.

3999540176505 is a deficient number, since it is larger than the sum of its proper divisors (2932996129515).

3999540176505 is a wasteful number, since it uses less digits than its factorization.

3999540176505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88878670600 (or 88878670597 counting only the distinct ones).

The product of its (nonzero) digits is 45927000, while the sum is 63.

The spelling of 3999540176505 in words is "three trillion, nine hundred ninety-nine billion, five hundred forty million, one hundred seventy-six thousand, five hundred five".