53381481538 has 16 divisors (see below), whose sum is σ = 99830303424. Its totient is φ = 20797979760.

The previous prime is 53381481511. The next prime is 53381481539. The reversal of 53381481538 is 83518418335.

It is a junction number, because it is equal to n+sod(n) for n = 53381481491 and 53381481500.

It is not an unprimeable number, because it can be changed into a prime (53381481539) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 173316345 + ... + 173316652.

It is an arithmetic number, because the mean of its divisors is an integer number (6239393964).

Almost surely, 2^53381481538 is an apocalyptic number.

53381481538 is a deficient number, since it is larger than the sum of its proper divisors (46448821886).

53381481538 is a wasteful number, since it uses less digits than its factorization.

53381481538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346633017.

The product of its digits is 1382400, while the sum is 49.

The spelling of 53381481538 in words is "fifty-three billion, three hundred eighty-one million, four hundred eighty-one thousand, five hundred thirty-eight".