2611621045 has 48 divisors (see below), whose sum is σ = 3524121216. Its totient is φ = 1856131200.

The previous prime is 2611621031. The next prime is 2611621123. The reversal of 2611621045 is 5401261162.

It is not a de Polignac number, because 2611621045 - 2⁹ = 2611620533 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 (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7001479 + ... + 7001851.

It is an arithmetic number, because the mean of its divisors is an integer number (73419192).

Almost surely, 2^2611621045 is an apocalyptic number.

It is an amenable number.

2611621045 is a deficient number, since it is larger than the sum of its proper divisors (912500171).

2611621045 is a wasteful number, since it uses less digits than its factorization.

2611621045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634 (or 623 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 2611621045 is about 51104.0218084644. The cubic root of 2611621045 is about 1377.1145065963.

The spelling of 2611621045 in words is "two billion, six hundred eleven million, six hundred twenty-one thousand, forty-five".