51106420323164 has 24 divisors (see below), whose sum is σ = 94317423320400. Its totient is φ = 24163557016320.

The previous prime is 51106420323071. The next prime is 51106420323197. The reversal of 51106420323164 is 46132302460115.

It is a super-2 number, since 2×51106420323164² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 621449549 + ... + 621531780.

It is an arithmetic number, because the mean of its divisors is an integer number (3929892638350).

Almost surely, 2^{51106420323164} is an apocalyptic number.

It is an amenable number.

51106420323164 is a deficient number, since it is larger than the sum of its proper divisors (43211002997236).

51106420323164 is a wasteful number, since it uses less digits than its factorization.

51106420323164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1242981893 (or 1242981891 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 38.

Adding to 51106420323164 its reverse (46132302460115), we get a palindrome (97238722783279).

The spelling of 51106420323164 in words is "fifty-one trillion, one hundred six billion, four hundred twenty million, three hundred twenty-three thousand, one hundred sixty-four".