2616621243 has 8 divisors (see below), whose sum is σ = 3640516608. Its totient is φ = 1668570024.

The previous prime is 2616621221. The next prime is 2616621253. The reversal of 2616621243 is 3421266162.

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

It is not a de Polignac number, because 2616621243 - 2⁵ = 2616621211 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2616621253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18960955 + ... + 18961092.

It is an arithmetic number, because the mean of its divisors is an integer number (455064576).

Almost surely, 2^2616621243 is an apocalyptic number.

2616621243 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2616621243 is a deficient number, since it is larger than the sum of its proper divisors (1023895365).

2616621243 is a wasteful number, since it uses less digits than its factorization.

2616621243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37922073.

The product of its digits is 20736, while the sum is 33.

The square root of 2616621243 is about 51152.9201805723. The cubic root of 2616621243 is about 1377.9928187270.

The spelling of 2616621243 in words is "two billion, six hundred sixteen million, six hundred twenty-one thousand, two hundred forty-three".