6415549081944 has 16 divisors (see below), whose sum is σ = 16038872704920. Its totient is φ = 2138516360640.

The previous prime is 6415549081939. The next prime is 6415549081999. The reversal of 6415549081944 is 4491809455146.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133657272517 + ... + 133657272564.

Almost surely, 2^{6415549081944} is an apocalyptic number.

It is an amenable number.

6415549081944 is an abundant number, since it is smaller than the sum of its proper divisors (9623323622976).

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

6415549081944 is a wasteful number, since it uses less digits than its factorization.

6415549081944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267314545090 (or 267314545086 counting only the distinct ones).

The product of its (nonzero) digits is 24883200, while the sum is 60.

The spelling of 6415549081944 in words is "six trillion, four hundred fifteen billion, five hundred forty-nine million, eighty-one thousand, nine hundred forty-four".