51561353152 has 14 divisors (see below), whose sum is σ = 102317060288. Its totient is φ = 25780676544.

The previous prime is 51561353143. The next prime is 51561353153. The reversal of 51561353152 is 25135316515.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51561353153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 402823008 + ... + 402823135.

Almost surely, 2^51561353152 is an apocalyptic number.

It is an amenable number.

51561353152 is a deficient number, since it is larger than the sum of its proper divisors (50755707136).

51561353152 is an equidigital number, since it uses as much as digits as its factorization.

51561353152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 805646155 (or 805646145 counting only the distinct ones).

The product of its digits is 67500, while the sum is 37.

Adding to 51561353152 its reverse (25135316515), we get a palindrome (76696669667).

The spelling of 51561353152 in words is "fifty-one billion, five hundred sixty-one million, three hundred fifty-three thousand, one hundred fifty-two".