6515488742 has 32 divisors (see below), whose sum is σ = 11662464000. Its totient is φ = 2727401544.

The previous prime is 6515488741. The next prime is 6515488753. The reversal of 6515488742 is 2478845156.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6515488741) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80942 + ... + 139937.

It is an arithmetic number, because the mean of its divisors is an integer number (364452000).

Almost surely, 2^6515488742 is an apocalyptic number.

6515488742 is a deficient number, since it is larger than the sum of its proper divisors (5146975258).

6515488742 is a wasteful number, since it uses less digits than its factorization.

6515488742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220945 (or 220931 counting only the distinct ones).

The product of its digits is 2150400, while the sum is 50.

The square root of 6515488742 is about 80718.5774279998. The cubic root of 6515488742 is about 1867.7367590071.

The spelling of 6515488742 in words is "six billion, five hundred fifteen million, four hundred eighty-eight thousand, seven hundred forty-two".