6121243944 has 24 divisors (see below), whose sum is σ = 16578369210. Its totient is φ = 2040414624.

The previous prime is 6121243937. The next prime is 6121243963. The reversal of 6121243944 is 4493421216.

6121243944 is a `hidden beast` number, since 6 + 1 + 212 + 439 + 4 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 5283836100 + 837407844 = 72690^2 + 28938^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 6121243899 and 6121243908.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 42508567 + ... + 42508710.

Almost surely, 2^6121243944 is an apocalyptic number.

It is an amenable number.

6121243944 is an abundant number, since it is smaller than the sum of its proper divisors (10457125266).

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

6121243944 is a wasteful number, since it uses less digits than its factorization.

6121243944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85017289 (or 85017282 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 6121243944 is about 78238.3789709373. The cubic root of 6121243944 is about 1829.2787769797.

The spelling of 6121243944 in words is "six billion, one hundred twenty-one million, two hundred forty-three thousand, nine hundred forty-four".