53403320311 has 64 divisors (see below), whose sum is σ = 66363494400. Its totient is φ = 42343257600.

The previous prime is 53403320303. The next prime is 53403320359. The reversal of 53403320311 is 11302330435.

It is a cyclic number.

It is not a de Polignac number, because 53403320311 - 2³ = 53403320303 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 (53403320611) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 35063796 + ... + 35065318.

It is an arithmetic number, because the mean of its divisors is an integer number (1036929600).

Almost surely, 2^53403320311 is an apocalyptic number.

53403320311 is a deficient number, since it is larger than the sum of its proper divisors (12960174089).

53403320311 is a wasteful number, since it uses less digits than its factorization.

53403320311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1780.

The product of its (nonzero) digits is 3240, while the sum is 25.

Adding to 53403320311 its reverse (11302330435), we get a palindrome (64705650746).

The spelling of 53403320311 in words is "fifty-three billion, four hundred three million, three hundred twenty thousand, three hundred eleven".