53953658561 has 16 divisors (see below), whose sum is σ = 59107332096. Its totient is φ = 48841650000.

The previous prime is 53953658459. The next prime is 53953658567. The reversal of 53953658561 is 16585635935.

It is not a de Polignac number, because 53953658561 - 2³⁰ = 52879916737 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 53953658497 and 53953658506.

It is not an unprimeable number, because it can be changed into a prime (53953658567) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7541336 + ... + 7548486.

It is an arithmetic number, because the mean of its divisors is an integer number (3694208256).

Almost surely, 2^53953658561 is an apocalyptic number.

It is an amenable number.

53953658561 is a deficient number, since it is larger than the sum of its proper divisors (5153673535).

53953658561 is a wasteful number, since it uses less digits than its factorization.

53953658561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9964.

The product of its digits is 14580000, while the sum is 56.

The spelling of 53953658561 in words is "fifty-three billion, nine hundred fifty-three million, six hundred fifty-eight thousand, five hundred sixty-one".