51113734745 has 8 divisors (see below), whose sum is σ = 61338966984. Its totient is φ = 40889330944.

The previous prime is 51113734729. The next prime is 51113734759. The reversal of 51113734745 is 54743731115.

It can be written as a sum of positive squares in 4 ways, for example, as 108222409 + 51005512336 = 10403^2 + 225844^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51113734745 - 2⁴ = 51113734729 is a prime.

It is a super-2 number, since 2×51113734745² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62144 + ... + 325713.

It is an arithmetic number, because the mean of its divisors is an integer number (7667370873).

Almost surely, 2^51113734745 is an apocalyptic number.

It is an amenable number.

51113734745 is a deficient number, since it is larger than the sum of its proper divisors (10225232239).

51113734745 is a wasteful number, since it uses less digits than its factorization.

51113734745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414219.

The product of its digits is 176400, while the sum is 41.

The spelling of 51113734745 in words is "fifty-one billion, one hundred thirteen million, seven hundred thirty-four thousand, seven hundred forty-five".