53378559997943 has 4 divisors (see below), whose sum is σ = 53378612279928. Its totient is φ = 53378507715960.

The previous prime is 53378559997907. The next prime is 53378559997979. The reversal of 53378559997943 is 34979995587335.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (53378559997907) and next prime (53378559997979).

It is a cyclic number.

It is not a de Polignac number, because 53378559997943 - 2¹⁴ = 53378559981559 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 (53378559991943) 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, 24578396 + ... + 26661857.

It is an arithmetic number, because the mean of its divisors is an integer number (13344653069982).

Almost surely, 2^{53378559997943} is an apocalyptic number.

53378559997943 is a deficient number, since it is larger than the sum of its proper divisors (52281985).

53378559997943 is a wasteful number, since it uses less digits than its factorization.

53378559997943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52281984.

The product of its digits is 34720812000, while the sum is 86.

The spelling of 53378559997943 in words is "fifty-three trillion, three hundred seventy-eight billion, five hundred fifty-nine million, nine hundred ninety-seven thousand, nine hundred forty-three".