51513431043452 has 48 divisors (see below), whose sum is σ = 103060116257280. Its totient is φ = 22070060020800.

The previous prime is 51513431043407. The next prime is 51513431043469. The reversal of 51513431043452 is 25434013431515.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1567218074 + ... + 1567250942.

It is an arithmetic number, because the mean of its divisors is an integer number (2147085755360).

Almost surely, 2^{51513431043452} is an apocalyptic number.

It is an amenable number.

51513431043452 is an abundant number, since it is smaller than the sum of its proper divisors (51546685213828).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51513431043452 is a wasteful number, since it uses less digits than its factorization.

51513431043452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49242 (or 49240 counting only the distinct ones).

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

Adding to 51513431043452 its reverse (25434013431515), we get a palindrome (76947444474967).

The spelling of 51513431043452 in words is "fifty-one trillion, five hundred thirteen billion, four hundred thirty-one million, forty-three thousand, four hundred fifty-two".