51090824487 has 16 divisors (see below), whose sum is σ = 70356781440. Its totient is φ = 32957514912.

The previous prime is 51090824479. The next prime is 51090824633. The reversal of 51090824487 is 78442809015.

It is a happy number.

It is not a de Polignac number, because 51090824487 - 2³ = 51090824479 is a prime.

It is a super-2 number, since 2×51090824487² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51090824417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1836912 + ... + 1864517.

It is an arithmetic number, because the mean of its divisors is an integer number (4397298840).

Almost surely, 2^51090824487 is an apocalyptic number.

51090824487 is a deficient number, since it is larger than the sum of its proper divisors (19265956953).

51090824487 is a wasteful number, since it uses less digits than its factorization.

51090824487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3701582.

The product of its (nonzero) digits is 645120, while the sum is 48.

The spelling of 51090824487 in words is "fifty-one billion, ninety million, eight hundred twenty-four thousand, four hundred eighty-seven".