51651166511155 has 8 divisors (see below), whose sum is σ = 61999592202432. Its totient is φ = 41308804949568.

The previous prime is 51651166511137. The next prime is 51651166511159. The reversal of 51651166511155 is 55111566115615.

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 a de Polignac number, because none of the positive numbers 2^k-51651166511155 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51651166511099 and 51651166511108.

It is not an unprimeable number, because it can be changed into a prime (51651166511159) 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, 1516013682 + ... + 1516047751.

It is an arithmetic number, because the mean of its divisors is an integer number (7749949025304).

Almost surely, 2^{51651166511155} is an apocalyptic number.

51651166511155 is a deficient number, since it is larger than the sum of its proper divisors (10348425691277).

51651166511155 is a wasteful number, since it uses less digits than its factorization.

51651166511155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3032064845.

The product of its digits is 675000, while the sum is 49.

The spelling of 51651166511155 in words is "fifty-one trillion, six hundred fifty-one billion, one hundred sixty-six million, five hundred eleven thousand, one hundred fifty-five".