51205453432563 has 8 divisors (see below), whose sum is σ = 68355313286400. Its totient is φ = 34096281266888.

The previous prime is 51205453432517. The next prime is 51205453432631. The reversal of 51205453432563 is 36523435450215.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51205453432563 - 2²¹ = 51205451335411 is a prime.

It is a super-2 number, since 2×51205453432563² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51205453432363) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10171919103 + ... + 10171924136.

It is an arithmetic number, because the mean of its divisors is an integer number (8544414160800).

Almost surely, 2^{51205453432563} is an apocalyptic number.

51205453432563 is a deficient number, since it is larger than the sum of its proper divisors (17149859853837).

51205453432563 is a wasteful number, since it uses less digits than its factorization.

51205453432563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20343844081.

The product of its (nonzero) digits is 6480000, while the sum is 48.

Adding to 51205453432563 its reverse (36523435450215), we get a palindrome (87728888882778).

The spelling of 51205453432563 in words is "fifty-one trillion, two hundred five billion, four hundred fifty-three million, four hundred thirty-two thousand, five hundred sixty-three".