6503148657 has 12 divisors (see below), whose sum is σ = 9456482100. Its totient is φ = 4306334688.

The previous prime is 6503148643. The next prime is 6503148683. The reversal of 6503148657 is 7568413056.

6503148657 is a `hidden beast` number, since 6 + 503 + 14 + 86 + 57 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 3346506801 + 3156641856 = 57849^2 + 56184^2 .

It is not a de Polignac number, because 6503148657 - 2⁸ = 6503148401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6503148607) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2423398 + ... + 2426079.

It is an arithmetic number, because the mean of its divisors is an integer number (788040175).

Almost surely, 2^6503148657 is an apocalyptic number.

It is an amenable number.

6503148657 is a deficient number, since it is larger than the sum of its proper divisors (2953333443).

6503148657 is a wasteful number, since it uses less digits than its factorization.

6503148657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4849632 (or 4849629 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 45.

The square root of 6503148657 is about 80642.1022605438. The cubic root of 6503148657 is about 1866.5568732865.

The spelling of 6503148657 in words is "six billion, five hundred three million, one hundred forty-eight thousand, six hundred fifty-seven".