2661406434 has 24 divisors (see below), whose sum is σ = 5792247552. Its totient is φ = 883155960.

The previous prime is 2661406421. The next prime is 2661406441. The reversal of 2661406434 is 4346041662.

2661406434 is a `hidden beast` number, since 2 + 6 + 6 + 1 + 4 + 0 + 643 + 4 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 327502 + ... + 335529.

It is an arithmetic number, because the mean of its divisors is an integer number (241343648).

Almost surely, 2^2661406434 is an apocalyptic number.

2661406434 is an abundant number, since it is smaller than the sum of its proper divisors (3130841118).

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

2661406434 is a wasteful number, since it uses less digits than its factorization.

2661406434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 663262 (or 663259 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 36.

The square root of 2661406434 is about 51588.8208238956. The cubic root of 2661406434 is about 1385.8101380952.

The spelling of 2661406434 in words is "two billion, six hundred sixty-one million, four hundred six thousand, four hundred thirty-four".