6121711556 has 24 divisors (see below), whose sum is σ = 11198451264. Its totient is φ = 2922622560.

The previous prime is 6121711553. The next prime is 6121711621. The reversal of 6121711556 is 6551171216.

It is a super-2 number, since 2×6121711556² = 74950704749727882272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6121711553) 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, 5735 + ... + 110798.

It is an arithmetic number, because the mean of its divisors is an integer number (466602136).

Almost surely, 2^6121711556 is an apocalyptic number.

It is an amenable number.

6121711556 is a deficient number, since it is larger than the sum of its proper divisors (5076739708).

6121711556 is a wasteful number, since it uses less digits than its factorization.

6121711556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117131 (or 117129 counting only the distinct ones).

The product of its digits is 12600, while the sum is 35.

The square root of 6121711556 is about 78241.3672937788. The cubic root of 6121711556 is about 1829.3253563425.

The spelling of 6121711556 in words is "six billion, one hundred twenty-one million, seven hundred eleven thousand, five hundred fifty-six".