2621061243 has 12 divisors (see below), whose sum is σ = 3878318808. Its totient is φ = 1704755040.

The previous prime is 2621061227. The next prime is 2621061257. The reversal of 2621061243 is 3421601262.

2621061243 is a `hidden beast` number, since 2 + 6 + 2 + 1 + 0 + 612 + 43 = 666.

It is not a de Polignac number, because 2621061243 - 2⁴ = 2621061227 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2621061043) by changing a digit.

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, 3551205 + ... + 3551942.

It is an arithmetic number, because the mean of its divisors is an integer number (323193234).

Almost surely, 2^2621061243 is an apocalyptic number.

2621061243 is a deficient number, since it is larger than the sum of its proper divisors (1257257565).

2621061243 is a wasteful number, since it uses less digits than its factorization.

2621061243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7103194 (or 7103191 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 2621061243 is about 51196.3010675576. The cubic root of 2621061243 is about 1378.7717915843.

The spelling of 2621061243 in words is "two billion, six hundred twenty-one million, sixty-one thousand, two hundred forty-three".