53767800018409 has 9 divisors (see below), whose sum is σ = 56207347210749. Its totient is φ = 51429908264460.

The previous prime is 53767800018377. The next prime is 53767800018437. The reversal of 53767800018409 is 90481000876735.

The square root of 53767800018409 is 7332653.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 53767800018409 - 2⁵ = 53767800018377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53767800018109) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 168491614 + ... + 168810424.

Almost surely, 2^{53767800018409} is an apocalyptic number.

53767800018409 is the 7332653-rd square number.

53767800018409 is the 3666327-th centered octagonal number.

It is an amenable number.

53767800018409 is a deficient number, since it is larger than the sum of its proper divisors (2439547192340).

53767800018409 is an frugal number, since it uses more digits than its factorization.

53767800018409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 637668 (or 318834 counting only the distinct ones).

The product of its (nonzero) digits is 10160640, while the sum is 58.

The spelling of 53767800018409 in words is "fifty-three trillion, seven hundred sixty-seven billion, eight hundred million, eighteen thousand, four hundred nine".