53609398994 has 4 divisors (see below), whose sum is σ = 80414098494. Its totient is φ = 26804699496.

The previous prime is 53609398993. The next prime is 53609399009. The reversal of 53609398994 is 49989390635.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 49989390635 = 5 ⋅9997878127.

It can be written as a sum of positive squares in only one way, i.e., 43963605625 + 9645793369 = 209675^2 + 98213^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 53609398994.

It is not an unprimeable number, because it can be changed into a prime (53609398993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13402349747 + ... + 13402349750.

Almost surely, 2^53609398994 is an apocalyptic number.

53609398994 is a deficient number, since it is larger than the sum of its proper divisors (26804699500).

53609398994 is a wasteful number, since it uses less digits than its factorization.

53609398994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26804699499.

The product of its (nonzero) digits is 56687040, while the sum is 65.

The spelling of 53609398994 in words is "fifty-three billion, six hundred nine million, three hundred ninety-eight thousand, nine hundred ninety-four".