2661052489 has 4 divisors (see below), whose sum is σ = 2662747920. Its totient is φ = 2659357060.

The previous prime is 2661052487. The next prime is 2661052501. The reversal of 2661052489 is 9842501662.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2661052489 - 2¹ = 2661052487 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2661052487) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 845359 + ... + 848500.

It is an arithmetic number, because the mean of its divisors is an integer number (665686980).

Almost surely, 2^2661052489 is an apocalyptic number.

It is an amenable number.

2661052489 is a deficient number, since it is larger than the sum of its proper divisors (1695431).

2661052489 is a wasteful number, since it uses less digits than its factorization.

2661052489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1695430.

The product of its (nonzero) digits is 207360, while the sum is 43.

The square root of 2661052489 is about 51585.3902670126. The cubic root of 2661052489 is about 1385.7487016170.

The spelling of 2661052489 in words is "two billion, six hundred sixty-one million, fifty-two thousand, four hundred eighty-nine".