53403213563 has 16 divisors (see below), whose sum is σ = 61955550720. Its totient is φ = 45081976896.

The previous prime is 53403213547. The next prime is 53403213571. The reversal of 53403213563 is 36531230435.

It is a cyclic number.

It is not a de Polignac number, because 53403213563 - 2⁴ = 53403213547 is a prime.

It is not an unprimeable number, because it can be changed into a prime (53403213593) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3478418 + ... + 3493736.

It is an arithmetic number, because the mean of its divisors is an integer number (3872221920).

Almost surely, 2^53403213563 is an apocalyptic number.

53403213563 is a deficient number, since it is larger than the sum of its proper divisors (8552337157).

53403213563 is a wasteful number, since it uses less digits than its factorization.

53403213563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22826.

The product of its (nonzero) digits is 97200, while the sum is 35.

Adding to 53403213563 its reverse (36531230435), we get a palindrome (89934443998).

The spelling of 53403213563 in words is "fifty-three billion, four hundred three million, two hundred thirteen thousand, five hundred sixty-three".