53381915479 has 4 divisors (see below), whose sum is σ = 53508713800. Its totient is φ = 53255117160.

The previous prime is 53381915459. The next prime is 53381915491. The reversal of 53381915479 is 97451918335.

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 53381915479 - 2¹⁵ = 53381882711 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53381915459) 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, 63398529 + ... + 63399370.

It is an arithmetic number, because the mean of its divisors is an integer number (13377178450).

Almost surely, 2^53381915479 is an apocalyptic number.

53381915479 is a deficient number, since it is larger than the sum of its proper divisors (126798321).

53381915479 is a wasteful number, since it uses less digits than its factorization.

53381915479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126798320.

The product of its digits is 4082400, while the sum is 55.

The spelling of 53381915479 in words is "fifty-three billion, three hundred eighty-one million, nine hundred fifteen thousand, four hundred seventy-nine".