51116501001530 has 32 divisors (see below), whose sum is σ = 100781417805840. Its totient is φ = 18580277847040.

The previous prime is 51116501001529. The next prime is 51116501001569. The reversal of 51116501001530 is 3510010561115.

It can be written as a sum of positive squares in 8 ways, for example, as 12327184198081 + 38789316803449 = 3511009^2 + 6228107^2 .

It is a super-2 number, since 2×51116501001530² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 51116501001493 and 51116501001502.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5184224381 + ... + 5184234240.

Almost surely, 2^{51116501001530} is an apocalyptic number.

51116501001530 is a deficient number, since it is larger than the sum of its proper divisors (49664916804310).

51116501001530 is a wasteful number, since it uses less digits than its factorization.

51116501001530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10368458674.

The product of its (nonzero) digits is 2250, while the sum is 29.

Adding to 51116501001530 its reverse (3510010561115), we get a palindrome (54626511562645).

The spelling of 51116501001530 in words is "fifty-one trillion, one hundred sixteen billion, five hundred one million, one thousand, five hundred thirty".