51210769068901 has 8 divisors (see below), whose sum is σ = 55255913244504. Its totient is φ = 47180746928640.

The previous prime is 51210769068853. The next prime is 51210769068931. The reversal of 51210769068901 is 10986096701215.

It is a happy number.

It is a Cunningham number, because it is equal to 7156170²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 7575562635876 + 43635206433025 = 2752374^2 + 6605695^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51210769068901 - 2³⁷ = 51073330115429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51210769068931) 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, 3780501796 + ... + 3780515341.

It is an arithmetic number, because the mean of its divisors is an integer number (6906989155563).

Almost surely, 2^{51210769068901} is an apocalyptic number.

It is an amenable number.

51210769068901 is a deficient number, since it is larger than the sum of its proper divisors (4045144175603).

51210769068901 is a wasteful number, since it uses less digits than its factorization.

51210769068901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7561017671.

The product of its (nonzero) digits is 1632960, while the sum is 55.

The spelling of 51210769068901 in words is "fifty-one trillion, two hundred ten billion, seven hundred sixty-nine million, sixty-eight thousand, nine hundred one".