53685861493 has 16 divisors (see below), whose sum is σ = 61886361600. Its totient is φ = 46092412080.

The previous prime is 53685861413. The next prime is 53685861497. The reversal of 53685861493 is 39416858635.

It is not a de Polignac number, because 53685861493 - 2²⁹ = 53148990581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53685861497) 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, 1323033 + ... + 1363006.

It is an arithmetic number, because the mean of its divisors is an integer number (3867897600).

Almost surely, 2^53685861493 is an apocalyptic number.

It is an amenable number.

53685861493 is a deficient number, since it is larger than the sum of its proper divisors (8200500107).

53685861493 is a wasteful number, since it uses less digits than its factorization.

53685861493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2686152.

The product of its digits is 18662400, while the sum is 58.

The spelling of 53685861493 in words is "fifty-three billion, six hundred eighty-five million, eight hundred sixty-one thousand, four hundred ninety-three".