6612540553 has 4 divisors (see below), whose sum is σ = 6645769600. Its totient is φ = 6579311508.

The previous prime is 6612540551. The next prime is 6612540617. The reversal of 6612540553 is 3550452166.

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, and also an emirpimes, since its reverse is a distinct semiprime: 3550452166 = 2 ⋅1775226083.

It is a cyclic number.

It is not a de Polignac number, because 6612540553 - 2¹ = 6612540551 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6612540551) 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, 16614225 + ... + 16614622.

It is an arithmetic number, because the mean of its divisors is an integer number (1661442400).

Almost surely, 2^6612540553 is an apocalyptic number.

It is an amenable number.

6612540553 is a deficient number, since it is larger than the sum of its proper divisors (33229047).

6612540553 is a wasteful number, since it uses less digits than its factorization.

6612540553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33229046.

The product of its (nonzero) digits is 108000, while the sum is 37.

The square root of 6612540553 is about 81317.5291865167. The cubic root of 6612540553 is about 1876.9647484762.

The spelling of 6612540553 in words is "six billion, six hundred twelve million, five hundred forty thousand, five hundred fifty-three".