51395610436 has 27 divisors (see below), whose sum is σ = 90495569983. Its totient is φ = 25540697960.

The previous prime is 51395610433. The next prime is 51395610439. The reversal of 51395610436 is 63401659315.

It is a happy number.

The square root of 51395610436 is 226706.

It is a perfect power (a square), and thus also a powerful number.

It is an interprime number because it is at equal distance from previous prime (51395610433) and next prime (51395610439).

It is a super-2 number, since 2×51395610436² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51395610392 and 51395610401.

It is not an unprimeable number, because it can be changed into a prime (51395610433) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 119247141 + ... + 119247571.

Almost surely, 2^51395610436 is an apocalyptic number.

51395610436 is the 226706-th square number.

It is an amenable number.

51395610436 is a deficient number, since it is larger than the sum of its proper divisors (39099959547).

51395610436 is an frugal number, since it uses more digits than its factorization.

51395610436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1392 (or 696 counting only the distinct ones).

The product of its (nonzero) digits is 291600, while the sum is 43.

The spelling of 51395610436 in words is "fifty-one billion, three hundred ninety-five million, six hundred ten thousand, four hundred thirty-six".