51061616049 has 96 divisors (see below), whose sum is σ = 77481550080. Its totient is φ = 29797092864.

The previous prime is 51061616033. The next prime is 51061616051. The reversal of 51061616049 is 94061616015.

It is not a de Polignac number, because 51061616049 - 2⁴ = 51061616033 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51061615998 and 51061616016.

It is not an unprimeable number, because it can be changed into a prime (51061616059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 136894227 + ... + 136894599.

It is an arithmetic number, because the mean of its divisors is an integer number (807099480).

Almost surely, 2^51061616049 is an apocalyptic number.

It is an amenable number.

51061616049 is a deficient number, since it is larger than the sum of its proper divisors (26419934031).

51061616049 is a wasteful number, since it uses less digits than its factorization.

51061616049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551 (or 508 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 39.

The spelling of 51061616049 in words is "fifty-one billion, sixty-one million, six hundred sixteen thousand, forty-nine".