6121806534 has 24 divisors (see below), whose sum is σ = 13281891480. Its totient is φ = 2037836448.

The previous prime is 6121806521. The next prime is 6121806571. The reversal of 6121806534 is 4356081216.

It is a happy number.

6121806534 is a `hidden beast` number, since 612 + 1 + 8 + 0 + 6 + 5 + 34 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 216807 + ... + 243410.

It is an arithmetic number, because the mean of its divisors is an integer number (553412145).

Almost surely, 2^6121806534 is an apocalyptic number.

6121806534 is an abundant number, since it is smaller than the sum of its proper divisors (7160084946).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6121806534 is a wasteful number, since it uses less digits than its factorization.

6121806534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 460964 (or 460961 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 6121806534 is about 78241.9742465641. The cubic root of 6121806534 is about 1829.3348169192.

The spelling of 6121806534 in words is "six billion, one hundred twenty-one million, eight hundred six thousand, five hundred thirty-four".