53613719685 has 12 divisors (see below), whose sum is σ = 92930447532. Its totient is φ = 28593983808.

The previous prime is 53613719683. The next prime is 53613719729. The reversal of 53613719685 is 58691731635.

53613719685 is a `hidden beast` number, since 5 + 3 + 613 + 7 + 19 + 6 + 8 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 31173080481 + 22440639204 = 176559^2 + 149802^2 .

It is not a de Polignac number, because 53613719685 - 2¹ = 53613719683 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53613719681) 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, 595707952 + ... + 595708041.

It is an arithmetic number, because the mean of its divisors is an integer number (7744203961).

Almost surely, 2^53613719685 is an apocalyptic number.

It is an amenable number.

53613719685 is a deficient number, since it is larger than the sum of its proper divisors (39316727847).

53613719685 is a wasteful number, since it uses less digits than its factorization.

53613719685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1191416004 (or 1191416001 counting only the distinct ones).

The product of its digits is 4082400, while the sum is 54.

The spelling of 53613719685 in words is "fifty-three billion, six hundred thirteen million, seven hundred nineteen thousand, six hundred eighty-five".