2621016245 has 4 divisors (see below), whose sum is σ = 3145219500. Its totient is φ = 2096812992.

The previous prime is 2621016239. The next prime is 2621016287. The reversal of 2621016245 is 5426101262.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1943663569 + 677352676 = 44087^2 + 26026^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2621016245 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 262101620 + ... + 262101629.

It is an arithmetic number, because the mean of its divisors is an integer number (786304875).

Almost surely, 2^2621016245 is an apocalyptic number.

It is an amenable number.

2621016245 is a deficient number, since it is larger than the sum of its proper divisors (524203255).

2621016245 is an equidigital number, since it uses as much as digits as its factorization.

2621016245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524203254.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 2621016245 is about 51195.8616003286. The cubic root of 2621016245 is about 1378.7639013543.

The spelling of 2621016245 in words is "two billion, six hundred twenty-one million, sixteen thousand, two hundred forty-five".