51656703755 has 8 divisors (see below), whose sum is σ = 62002130400. Its totient is φ = 41315972416.

The previous prime is 51656703733. The next prime is 51656703757. The reversal of 51656703755 is 55730765615.

It is a happy number.

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 51656703755 - 2¹⁴ = 51656687371 is a prime.

It is a super-2 number, since 2×51656703755² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51656703757) 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, 1149575 + ... + 1193664.

It is an arithmetic number, because the mean of its divisors is an integer number (7750266300).

Almost surely, 2^51656703755 is an apocalyptic number.

51656703755 is a deficient number, since it is larger than the sum of its proper divisors (10345426645).

51656703755 is a wasteful number, since it uses less digits than its factorization.

51656703755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2347653.

The product of its (nonzero) digits is 3307500, while the sum is 50.

The spelling of 51656703755 in words is "fifty-one billion, six hundred fifty-six million, seven hundred three thousand, seven hundred fifty-five".