51061111010 has 96 divisors (see below), whose sum is σ = 115302988080. Its totient is φ = 16137128448.

The previous prime is 51061110979. The next prime is 51061111019. The reversal of 51061111010 is 1011116015.

It can be written as a sum of positive squares in 8 ways, for example, as 6763911049 + 44297199961 = 82243^2 + 210469^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 51061111010.

It is not an unprimeable number, because it can be changed into a prime (51061111019) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4816796 + ... + 4827384.

Almost surely, 2^51061111010 is an apocalyptic number.

51061111010 is an abundant number, since it is smaller than the sum of its proper divisors (64241877070).

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

51061111010 is a wasteful number, since it uses less digits than its factorization.

51061111010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11380 (or 11373 counting only the distinct ones).

The product of its (nonzero) digits is 30, while the sum is 17.

Adding to 51061111010 its reverse (1011116015), we get a palindrome (52072227025).

The spelling of 51061111010 in words is "fifty-one billion, sixty-one million, one hundred eleven thousand, ten".