6515148856 has 8 divisors (see below), whose sum is σ = 12215904120. Its totient is φ = 3257574424.

The previous prime is 6515148853. The next prime is 6515148863. The reversal of 6515148856 is 6588415156.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6515148853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 407196796 + ... + 407196811.

It is an arithmetic number, because the mean of its divisors is an integer number (1526988015).

Almost surely, 2^6515148856 is an apocalyptic number.

It is an amenable number.

6515148856 is a deficient number, since it is larger than the sum of its proper divisors (5700755264).

6515148856 is a wasteful number, since it uses less digits than its factorization.

6515148856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 814393613 (or 814393609 counting only the distinct ones).

The product of its digits is 1152000, while the sum is 49.

The square root of 6515148856 is about 80716.4720239927. The cubic root of 6515148856 is about 1867.7042810846.

The spelling of 6515148856 in words is "six billion, five hundred fifteen million, one hundred forty-eight thousand, eight hundred fifty-six".