53139821582 has 4 divisors (see below), whose sum is σ = 79709732376. Its totient is φ = 26569910790.

The previous prime is 53139821573. The next prime is 53139821587. The reversal of 53139821582 is 28512893135.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 28512893135 = 5 ⋅5702578627.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53139821587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13284955394 + ... + 13284955397.

It is an arithmetic number, because the mean of its divisors is an integer number (19927433094).

Almost surely, 2^53139821582 is an apocalyptic number.

53139821582 is a deficient number, since it is larger than the sum of its proper divisors (26569910794).

53139821582 is a wasteful number, since it uses less digits than its factorization.

53139821582 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26569910793.

The product of its digits is 518400, while the sum is 47.

The spelling of 53139821582 in words is "fifty-three billion, one hundred thirty-nine million, eight hundred twenty-one thousand, five hundred eighty-two".