51082731087 has 8 divisors (see below), whose sum is σ = 68172627504. Its totient is φ = 34023994368.

The previous prime is 51082731079. The next prime is 51082731103. The reversal of 51082731087 is 78013728015.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51082731087 - 2³ = 51082731079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51082731017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7786098 + ... + 7792655.

It is an arithmetic number, because the mean of its divisors is an integer number (8521578438).

Almost surely, 2^51082731087 is an apocalyptic number.

51082731087 is a deficient number, since it is larger than the sum of its proper divisors (17089896417).

51082731087 is a wasteful number, since it uses less digits than its factorization.

51082731087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15579849.

The product of its (nonzero) digits is 94080, while the sum is 42.

The spelling of 51082731087 in words is "fifty-one billion, eighty-two million, seven hundred thirty-one thousand, eighty-seven".