51543451364 has 24 divisors (see below), whose sum is σ = 90881094528. Its totient is φ = 25577514560.

The previous prime is 51543451363. The next prime is 51543451369. The reversal of 51543451364 is 46315434515.

It is not an unprimeable number, because it can be changed into a prime (51543451363) 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, 3055457 + ... + 3072279.

It is an arithmetic number, because the mean of its divisors is an integer number (3786712272).

Almost surely, 2^51543451364 is an apocalyptic number.

It is an amenable number.

51543451364 is a deficient number, since it is larger than the sum of its proper divisors (39337643164).

51543451364 is a wasteful number, since it uses less digits than its factorization.

51543451364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22555 (or 22553 counting only the distinct ones).

The product of its digits is 432000, while the sum is 41.

Adding to 51543451364 its reverse (46315434515), we get a palindrome (97858885879).

The spelling of 51543451364 in words is "fifty-one billion, five hundred forty-three million, four hundred fifty-one thousand, three hundred sixty-four".