6121516603 has 4 divisors (see below), whose sum is σ = 6270821928. Its totient is φ = 5972211280.

The previous prime is 6121516601. The next prime is 6121516633. The reversal of 6121516603 is 3066151216.

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

It is a cyclic number.

It is not a de Polignac number, because 6121516603 - 2¹ = 6121516601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6121516601) 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, 74652601 + ... + 74652682.

It is an arithmetic number, because the mean of its divisors is an integer number (1567705482).

Almost surely, 2^6121516603 is an apocalyptic number.

6121516603 is a deficient number, since it is larger than the sum of its proper divisors (149305325).

6121516603 is a wasteful number, since it uses less digits than its factorization.

6121516603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149305324.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 6121516603 is about 78240.1214403454. The cubic root of 6121516603 is about 1829.3059371409.

Adding to 6121516603 its reverse (3066151216), we get a palindrome (9187667819).

The spelling of 6121516603 in words is "six billion, one hundred twenty-one million, five hundred sixteen thousand, six hundred three".