51011061050 has 48 divisors (see below), whose sum is σ = 102357379512. Its totient is φ = 18841804800.

The previous prime is 51011061043. The next prime is 51011061071. The reversal of 51011061050 is 5016011015.

It can be written as a sum of positive squares in 12 ways, for example, as 30878572729 + 20132488321 = 175723^2 + 141889^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 521111 + ... + 611210.

Almost surely, 2^51011061050 is an apocalyptic number.

51011061050 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51011061050 is an abundant number, since it is smaller than the sum of its proper divisors (51346318462).

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

51011061050 is a wasteful number, since it uses less digits than its factorization.

51011061050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1132403 (or 1132398 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 20.

Adding to 51011061050 its reverse (5016011015), we get a palindrome (56027072065).

The spelling of 51011061050 in words is "fifty-one billion, eleven million, sixty-one thousand, fifty".