53573268381 has 4 divisors (see below), whose sum is σ = 71431024512. Its totient is φ = 35715512252.

The previous prime is 53573268367. The next prime is 53573268421. The reversal of 53573268381 is 18386237535.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 53573268381 - 2¹¹ = 53573266333 is a prime.

It is a super-2 number, since 2×53573268381² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53573268341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8928878061 + ... + 8928878066.

It is an arithmetic number, because the mean of its divisors is an integer number (17857756128).

Almost surely, 2^53573268381 is an apocalyptic number.

It is an amenable number.

53573268381 is a deficient number, since it is larger than the sum of its proper divisors (17857756131).

53573268381 is a wasteful number, since it uses less digits than its factorization.

53573268381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17857756130.

The product of its digits is 3628800, while the sum is 51.

The spelling of 53573268381 in words is "fifty-three billion, five hundred seventy-three million, two hundred sixty-eight thousand, three hundred eighty-one".