51515016050 has 24 divisors (see below), whose sum is σ = 96391705536. Its totient is φ = 20482613840.

The previous prime is 51515016031. The next prime is 51515016067. The reversal of 51515016050 is 5061051515.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3076382 + ... + 3093081.

It is an arithmetic number, because the mean of its divisors is an integer number (4016321064).

Almost surely, 2^51515016050 is an apocalyptic number.

51515016050 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51515016050 is a deficient number, since it is larger than the sum of its proper divisors (44876689486).

51515016050 is a wasteful number, since it uses less digits than its factorization.

51515016050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6169642 (or 6169637 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 29.

Adding to 51515016050 its reverse (5061051515), we get a palindrome (56576067565).

The spelling of 51515016050 in words is "fifty-one billion, five hundred fifteen million, sixteen thousand, fifty".