6121798511 has 4 divisors (see below), whose sum is σ = 6181233552. Its totient is φ = 6062363472.

The previous prime is 6121798483. The next prime is 6121798513. The reversal of 6121798511 is 1158971216.

It is a happy number.

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 6121798511 - 2¹⁸ = 6121536367 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6121798513) 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, 29717366 + ... + 29717571.

It is an arithmetic number, because the mean of its divisors is an integer number (1545308388).

Almost surely, 2^6121798511 is an apocalyptic number.

6121798511 is a deficient number, since it is larger than the sum of its proper divisors (59435041).

6121798511 is a wasteful number, since it uses less digits than its factorization.

6121798511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59435040.

The product of its digits is 30240, while the sum is 41.

The square root of 6121798511 is about 78241.9229761130. The cubic root of 6121798511 is about 1829.3340177673.

The spelling of 6121798511 in words is "six billion, one hundred twenty-one million, seven hundred ninety-eight thousand, five hundred eleven".