51000105510 has 48 divisors (see below), whose sum is σ = 136184074416. Its totient is φ = 13232458944.

The previous prime is 51000105491. The next prime is 51000105511. The reversal of 51000105510 is 1550100015.

51000105510 is a `hidden beast` number, since 5 + 100 + 0 + 10 + 551 + 0 = 666.

It is a super-2 number, since 2×51000105510² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51000105511) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7654344 + ... + 7661003.

It is an arithmetic number, because the mean of its divisors is an integer number (2837168217).

Almost surely, 2^51000105510 is an apocalyptic number.

51000105510 is an abundant number, since it is smaller than the sum of its proper divisors (85183968906).

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

51000105510 is a wasteful number, since it uses less digits than its factorization.

51000105510 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15315397 (or 15315394 counting only the distinct ones).

The product of its (nonzero) digits is 125, while the sum is 18.

Adding to 51000105510 its reverse (1550100015), we get a palindrome (52550205525).

The spelling of 51000105510 in words is "fifty-one billion, one hundred five thousand, five hundred ten".