6501155560 has 32 divisors (see below), whose sum is σ = 14636514600. Its totient is φ = 2598877440.

The previous prime is 6501155537. The next prime is 6501155567. The reversal of 6501155560 is 655511056.

It can be written as a sum of positive squares in 4 ways, for example, as 6047550756 + 453604804 = 77766^2 + 21298^2 .

It is not an unprimeable number, because it can be changed into a prime (6501155567) 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, 18070 + ... + 115450.

Almost surely, 2^6501155560 is an apocalyptic number.

It is an amenable number.

6501155560 is an abundant number, since it is smaller than the sum of its proper divisors (8135359040).

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

6501155560 is a wasteful number, since it uses less digits than its factorization.

6501155560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99061 (or 99057 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 34.

The square root of 6501155560 is about 80629.7436433975. The cubic root of 6501155560 is about 1866.3661652041.

The spelling of 6501155560 in words is "six billion, five hundred one million, one hundred fifty-five thousand, five hundred sixty".