6129975440 has 40 divisors (see below), whose sum is σ = 14271616320. Its totient is φ = 2448648576.

The previous prime is 6129975361. The next prime is 6129975443. The reversal of 6129975440 is 445799216.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (6129975443) 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, 7277 + ... + 110963.

It is an arithmetic number, because the mean of its divisors is an integer number (356790408).

Almost surely, 2^6129975440 is an apocalyptic number.

It is an amenable number.

6129975440 is an abundant number, since it is smaller than the sum of its proper divisors (8141640880).

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

6129975440 is a wasteful number, since it uses less digits than its factorization.

6129975440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104439 (or 104433 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 47.

The square root of 6129975440 is about 78294.1596800170. The cubic root of 6129975440 is about 1830.1481401372.

The spelling of 6129975440 in words is "six billion, one hundred twenty-nine million, nine hundred seventy-five thousand, four hundred forty".