53556426115985 has 8 divisors (see below), whose sum is σ = 69211381442280. Its totient is φ = 39549360824064.

The previous prime is 53556426115979. The next prime is 53556426116021. The reversal of 53556426115985 is 58951162465535.

It can be written as a sum of positive squares in 4 ways, for example, as 3757534126096 + 49798891989889 = 1938436^2 + 7056833^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 53556426115985 - 2⁸ = 53556426115729 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (65), and also a Moran number because the ratio is a prime number: 823945017169 = 53556426115985 / (5 + 3 + 5 + 5 + 6 + 4 + 2 + 6 + 1 + 1 + 5 + 9 + 8 + 5).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 411972508520 + ... + 411972508649.

It is an arithmetic number, because the mean of its divisors is an integer number (8651422680285).

Almost surely, 2^{53556426115985} is an apocalyptic number.

It is an amenable number.

53556426115985 is a deficient number, since it is larger than the sum of its proper divisors (15654955326295).

53556426115985 is a wasteful number, since it uses less digits than its factorization.

53556426115985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 823945017187.

The product of its digits is 194400000, while the sum is 65.

The spelling of 53556426115985 in words is "fifty-three trillion, five hundred fifty-six billion, four hundred twenty-six million, one hundred fifteen thousand, nine hundred eighty-five".