51516517552 has 10 divisors (see below), whose sum is σ = 99813252788. Its totient is φ = 25758258768.

The previous prime is 51516517537. The next prime is 51516517553. The reversal of 51516517552 is 25571561515.

It is a junction number, because it is equal to n+sod(n) for n = 51516517499 and 51516517508.

It is not an unprimeable number, because it can be changed into a prime (51516517553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1609891158 + ... + 1609891189.

Almost surely, 2^51516517552 is an apocalyptic number.

It is an amenable number.

51516517552 is a deficient number, since it is larger than the sum of its proper divisors (48296735236).

51516517552 is a wasteful number, since it uses less digits than its factorization.

51516517552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3219782355 (or 3219782349 counting only the distinct ones).

The product of its digits is 262500, while the sum is 43.

The spelling of 51516517552 in words is "fifty-one billion, five hundred sixteen million, five hundred seventeen thousand, five hundred fifty-two".