51657023135841 has 4 divisors (see below), whose sum is σ = 68876030847792. Its totient is φ = 34438015423892.

The previous prime is 51657023135827. The next prime is 51657023135923. The reversal of 51657023135841 is 14853132075615.

51657023135841 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51657023135841 - 2¹³ = 51657023127649 is a prime.

It is a super-2 number, since 2×51657023135841² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51657023134841) 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 in 3 ways as a sum of consecutive naturals, for example, 8609503855971 + ... + 8609503855976.

It is an arithmetic number, because the mean of its divisors is an integer number (17219007711948).

Almost surely, 2^{51657023135841} is an apocalyptic number.

It is an amenable number.

51657023135841 is a deficient number, since it is larger than the sum of its proper divisors (17219007711951).

51657023135841 is a wasteful number, since it uses less digits than its factorization.

51657023135841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17219007711950.

The product of its (nonzero) digits is 3024000, while the sum is 51.

The spelling of 51657023135841 in words is "fifty-one trillion, six hundred fifty-seven billion, twenty-three million, one hundred thirty-five thousand, eight hundred forty-one".