53649648657 has 48 divisors (see below), whose sum is σ = 86030582976. Its totient is φ = 31942512000.

The previous prime is 53649648653. The next prime is 53649648671. The reversal of 53649648657 is 75684694635.

53649648657 is a `hidden beast` number, since 5 + 3 + 64 + 96 + 486 + 5 + 7 = 666.

It is not a de Polignac number, because 53649648657 - 2² = 53649648653 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 53649648594 and 53649648603.

It is not an unprimeable number, because it can be changed into a prime (53649648653) by changing a digit.

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, 5327407 + ... + 5337467.

It is an arithmetic number, because the mean of its divisors is an integer number (1792303812).

Almost surely, 2^53649648657 is an apocalyptic number.

It is an amenable number.

53649648657 is a deficient number, since it is larger than the sum of its proper divisors (32380934319).

53649648657 is a wasteful number, since it uses less digits than its factorization.

53649648657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11022 (or 11019 counting only the distinct ones).

The product of its digits is 130636800, while the sum is 63.

The spelling of 53649648657 in words is "fifty-three billion, six hundred forty-nine million, six hundred forty-eight thousand, six hundred fifty-seven".