51061870287 has 32 divisors (see below), whose sum is σ = 76738752000. Its totient is φ = 33553263744.

The previous prime is 51061870273. The next prime is 51061870303. The reversal of 51061870287 is 78207816015.

It is a happy number.

51061870287 is a `hidden beast` number, since 5 + 1 + 0 + 618 + 7 + 0 + 28 + 7 = 666.

It is not a de Polignac number, because 51061870287 - 2¹¹ = 51061868239 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51061870247) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 530503 + ... + 619319.

It is an arithmetic number, because the mean of its divisors is an integer number (2398086000).

Almost surely, 2^51061870287 is an apocalyptic number.

51061870287 is a deficient number, since it is larger than the sum of its proper divisors (25676881713).

51061870287 is a wasteful number, since it uses less digits than its factorization.

51061870287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89132 (or 89126 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 45.

The spelling of 51061870287 in words is "fifty-one billion, sixty-one million, eight hundred seventy thousand, two hundred eighty-seven".