51105335102 has 4 divisors (see below), whose sum is σ = 76658002656. Its totient is φ = 25552667550.

The previous prime is 51105335089. The next prime is 51105335147. The reversal of 51105335102 is 20153350115.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×51105335102² (a number of 22 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 as a sum of consecutive naturals, namely, 12776333774 + ... + 12776333777.

It is an arithmetic number, because the mean of its divisors is an integer number (19164500664).

Almost surely, 2^51105335102 is an apocalyptic number.

51105335102 is a deficient number, since it is larger than the sum of its proper divisors (25552667554).

51105335102 is a wasteful number, since it uses less digits than its factorization.

51105335102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25552667553.

The product of its (nonzero) digits is 2250, while the sum is 26.

Adding to 51105335102 its reverse (20153350115), we get a palindrome (71258685217).

The spelling of 51105335102 in words is "fifty-one billion, one hundred five million, three hundred thirty-five thousand, one hundred two".