51519377290 has 12 divisors (see below), whose sum is σ = 92736171126. Its totient is φ = 20607463808.

The previous prime is 51519377263. The next prime is 51519377291. The reversal of 51519377290 is 9277391515.

It can be written as a sum of positive squares in 3 ways, for example, as 47669298889 + 3850078401 = 218333^2 + 62049^2 .

It is not an unprimeable number, because it can be changed into a prime (51519377291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 681882 + ... + 753658.

Almost surely, 2^51519377290 is an apocalyptic number.

51519377290 is a deficient number, since it is larger than the sum of its proper divisors (41216793836).

51519377290 is an frugal number, since it uses more digits than its factorization.

51519377290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143561 (or 71784 counting only the distinct ones).

The product of its (nonzero) digits is 595350, while the sum is 49.

The spelling of 51519377290 in words is "fifty-one billion, five hundred nineteen million, three hundred seventy-seven thousand, two hundred ninety".