65631553421453 has 4 divisors (see below), whose sum is σ = 67748700306048. Its totient is φ = 63514406536860.

The previous prime is 65631553421429. The next prime is 65631553421461. The reversal of 65631553421453 is 35412435513656.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 65631553421453 - 2⁶ = 65631553421389 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 65631553421395 and 65631553421404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65631553421053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1058573442251 + ... + 1058573442312.

It is an arithmetic number, because the mean of its divisors is an integer number (16937175076512).

Almost surely, 2^{65631553421453} is an apocalyptic number.

It is an amenable number.

65631553421453 is a deficient number, since it is larger than the sum of its proper divisors (2117146884595).

65631553421453 is a wasteful number, since it uses less digits than its factorization.

65631553421453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2117146884594.

The product of its digits is 19440000, while the sum is 53.

The spelling of 65631553421453 in words is "sixty-five trillion, six hundred thirty-one billion, five hundred fifty-three million, four hundred twenty-one thousand, four hundred fifty-three".