6501620345 has 48 divisors (see below), whose sum is σ = 8964112320. Its totient is φ = 4484188800.

The previous prime is 6501620329. The next prime is 6501620357. The reversal of 6501620345 is 5430261056.

It is not a de Polignac number, because 6501620345 - 2⁴ = 6501620329 is a prime.

It is a super-2 number, since 2×6501620345² = 84542134221035838050, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5551610 + ... + 5552780.

It is an arithmetic number, because the mean of its divisors is an integer number (186752340).

Almost surely, 2^6501620345 is an apocalyptic number.

It is an amenable number.

6501620345 is a deficient number, since it is larger than the sum of its proper divisors (2462491975).

6501620345 is a wasteful number, since it uses less digits than its factorization.

6501620345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1334 (or 1275 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 6501620345 is about 80632.6258099040. The cubic root of 6501620345 is about 1866.4106413139.

The spelling of 6501620345 in words is "six billion, five hundred one million, six hundred twenty thousand, three hundred forty-five".