53013688646 has 4 divisors (see below), whose sum is σ = 79520532972. Its totient is φ = 26506844322.

The previous prime is 53013688627. The next prime is 53013688691. The reversal of 53013688646 is 64688631035.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 53013688594 and 53013688603.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13253422160 + ... + 13253422163.

It is an arithmetic number, because the mean of its divisors is an integer number (19880133243).

Almost surely, 2^53013688646 is an apocalyptic number.

53013688646 is a deficient number, since it is larger than the sum of its proper divisors (26506844326).

53013688646 is a wasteful number, since it uses less digits than its factorization.

53013688646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26506844325.

The product of its (nonzero) digits is 2488320, while the sum is 50.

The spelling of 53013688646 in words is "fifty-three billion, thirteen million, six hundred eighty-eight thousand, six hundred forty-six".