51100101660504 has 128 divisors (see below), whose sum is σ = 138010059532800. Its totient is φ = 15673650094080.

The previous prime is 51100101660463. The next prime is 51100101660523. The reversal of 51100101660504 is 40506610100115.

It is a super-2 number, since 2×51100101660504² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 977236792 + ... + 977289080.

It is an arithmetic number, because the mean of its divisors is an integer number (1078203590100).

Almost surely, 2^{51100101660504} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51100101660504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69005029766400).

51100101660504 is an abundant number, since it is smaller than the sum of its proper divisors (86909957872296).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51100101660504 is a wasteful number, since it uses less digits than its factorization.

51100101660504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62105 (or 62101 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 30.

Adding to 51100101660504 its reverse (40506610100115), we get a palindrome (91606711760619).

The spelling of 51100101660504 in words is "fifty-one trillion, one hundred billion, one hundred one million, six hundred sixty thousand, five hundred four".