53154443509 has 2 divisors, whose sum is σ = 53154443510. Its totient is φ = 53154443508.

The previous prime is 53154443471. The next prime is 53154443627. The reversal of 53154443509 is 90534445135.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43828678609 + 9325764900 = 209353^2 + 96570^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53154443509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53154440509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26577221754 + 26577221755.

It is an arithmetic number, because the mean of its divisors is an integer number (26577221755).

Almost surely, 2^53154443509 is an apocalyptic number.

It is an amenable number.

53154443509 is a deficient number, since it is larger than the sum of its proper divisors (1).

53154443509 is an equidigital number, since it uses as much as digits as its factorization.

53154443509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648000, while the sum is 43.

The spelling of 53154443509 in words is "fifty-three billion, one hundred fifty-four million, four hundred forty-three thousand, five hundred nine".