51100020330 has 16 divisors (see below), whose sum is σ = 122640048864. Its totient is φ = 13626672080.

The previous prime is 51100020329. The next prime is 51100020341. The reversal of 51100020330 is 3302000115.

It is a happy number.

It is a super-2 number, since 2×51100020330² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

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, 851666976 + ... + 851667035.

It is an arithmetic number, because the mean of its divisors is an integer number (7665003054).

Almost surely, 2^51100020330 is an apocalyptic number.

51100020330 is an abundant number, since it is smaller than the sum of its proper divisors (71540028534).

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

51100020330 is a wasteful number, since it uses less digits than its factorization.

51100020330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1703334021.

The product of its (nonzero) digits is 90, while the sum is 15.

Adding to 51100020330 its reverse (3302000115), we get a palindrome (54402020445).

The spelling of 51100020330 in words is "fifty-one billion, one hundred million, twenty thousand, three hundred thirty".