51164122444651 has 4 divisors (see below), whose sum is σ = 51354323643600. Its totient is φ = 50973921245704.

The previous prime is 51164122444619. The next prime is 51164122444663. The reversal of 51164122444651 is 15644422146115.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51164122444651 - 2⁵ = 51164122444619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51164122444151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95100599071 + ... + 95100599608.

It is an arithmetic number, because the mean of its divisors is an integer number (12838580910900).

Almost surely, 2^{51164122444651} is an apocalyptic number.

51164122444651 is a deficient number, since it is larger than the sum of its proper divisors (190201198949).

51164122444651 is a wasteful number, since it uses less digits than its factorization.

51164122444651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190201198948.

The product of its digits is 921600, while the sum is 46.

The spelling of 51164122444651 in words is "fifty-one trillion, one hundred sixty-four billion, one hundred twenty-two million, four hundred forty-four thousand, six hundred fifty-one".