6115801644 has 72 divisors (see below), whose sum is σ = 16549198848. Its totient is φ = 1972829520.

The previous prime is 6115801639. The next prime is 6115801649. The reversal of 6115801644 is 4461085116.

6115801644 is a `hidden beast` number, since 6 + 1 + 1 + 5 + 8 + 0 + 1 + 644 = 666.

It is an interprime number because it is at equal distance from previous prime (6115801639) and next prime (6115801649).

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

It is a junction number, because it is equal to n+sod(n) for n = 6115801599 and 6115801608.

It is not an unprimeable number, because it can be changed into a prime (6115801649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 71352 + ... + 131615.

It is an arithmetic number, because the mean of its divisors is an integer number (229849984).

Almost surely, 2^6115801644 is an apocalyptic number.

It is an amenable number.

6115801644 is an abundant number, since it is smaller than the sum of its proper divisors (10433397204).

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

6115801644 is a wasteful number, since it uses less digits than its factorization.

6115801644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203017 (or 203003 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 6115801644 is about 78203.5909917185. The cubic root of 6115801644 is about 1828.7364887424.

The spelling of 6115801644 in words is "six billion, one hundred fifteen million, eight hundred one thousand, six hundred forty-four".