53919404347449 has 16 divisors (see below), whose sum is σ = 76453920385920. Its totient is φ = 33684046068480.

The previous prime is 53919404347429. The next prime is 53919404347451. The reversal of 53919404347449 is 94474340491935.

It is not a de Polignac number, because 53919404347449 - 2²¹ = 53919402250297 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 53919404347449.

It is not an unprimeable number, because it can be changed into a prime (53919404347429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2308379637 + ... + 2308402994.

It is an arithmetic number, because the mean of its divisors is an integer number (4778370024120).

Almost surely, 2^{53919404347449} is an apocalyptic number.

It is an amenable number.

53919404347449 is a deficient number, since it is larger than the sum of its proper divisors (22534516038471).

53919404347449 is a wasteful number, since it uses less digits than its factorization.

53919404347449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4616782880.

The product of its (nonzero) digits is 235146240, while the sum is 66.

The spelling of 53919404347449 in words is "fifty-three trillion, nine hundred nineteen billion, four hundred four million, three hundred forty-seven thousand, four hundred forty-nine".