51005601105104 has 20 divisors (see below), whose sum is σ = 101233677804420. Its totient is φ = 24880781026560.

The previous prime is 51005601105101. The next prime is 51005601105167. The reversal of 51005601105104 is 40150110650015.

It can be written as a sum of positive squares in 2 ways, for example, as 29970719600704 + 21034881504400 = 5474552^2 + 4586380^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51005601105101) 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, 38876219699 + ... + 38876221010.

It is an arithmetic number, because the mean of its divisors is an integer number (5061683890221).

Almost surely, 2^{51005601105104} is an apocalyptic number.

It is an amenable number.

51005601105104 is a deficient number, since it is larger than the sum of its proper divisors (50228076699316).

51005601105104 is a wasteful number, since it uses less digits than its factorization.

51005601105104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77752440758 (or 77752440752 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 29.

Adding to 51005601105104 its reverse (40150110650015), we get a palindrome (91155711755119).

The spelling of 51005601105104 in words is "fifty-one trillion, five billion, six hundred one million, one hundred five thousand, one hundred four".