53573671639 has 4 divisors (see below), whose sum is σ = 53606005024. Its totient is φ = 53541338256.

The previous prime is 53573671601. The next prime is 53573671687. The reversal of 53573671639 is 93617637535.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 53573671639 - 2¹³ = 53573663447 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 53573671639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53573671339) 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, 16164207 + ... + 16167520.

It is an arithmetic number, because the mean of its divisors is an integer number (13401501256).

Almost surely, 2^53573671639 is an apocalyptic number.

53573671639 is a deficient number, since it is larger than the sum of its proper divisors (32333385).

53573671639 is a wasteful number, since it uses less digits than its factorization.

53573671639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32333384.

The product of its digits is 10716300, while the sum is 55.

The spelling of 53573671639 in words is "fifty-three billion, five hundred seventy-three million, six hundred seventy-one thousand, six hundred thirty-nine".