2661440415 has 8 divisors (see below), whose sum is σ = 4258304688. Its totient is φ = 1419434880.

The previous prime is 2661440407. The next prime is 2661440429. The reversal of 2661440415 is 5140441662.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2661440415 - 2³ = 2661440407 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88714666 + ... + 88714695.

It is an arithmetic number, because the mean of its divisors is an integer number (532288086).

Almost surely, 2^2661440415 is an apocalyptic number.

2661440415 is a deficient number, since it is larger than the sum of its proper divisors (1596864273).

2661440415 is a wasteful number, since it uses less digits than its factorization.

2661440415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177429369.

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 2661440415 is about 51589.1501674528. The cubic root of 2661440415 is about 1385.8160361063.

The spelling of 2661440415 in words is "two billion, six hundred sixty-one million, four hundred forty thousand, four hundred fifteen".