51242837967 has 12 divisors (see below), whose sum is σ = 74023076400. Its totient is φ = 34159287168.

The previous prime is 51242837939. The next prime is 51242837999. The reversal of 51242837967 is 76973824215.

It is a happy number.

51242837967 is a `hidden beast` number, since 512 + 4 + 2 + 8 + 37 + 96 + 7 = 666.

It is not a de Polignac number, because 51242837967 - 2¹⁹ = 51242313679 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51242837917) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 88467 + ... + 332132.

It is an arithmetic number, because the mean of its divisors is an integer number (6168589700).

Almost surely, 2^51242837967 is an apocalyptic number.

51242837967 is a deficient number, since it is larger than the sum of its proper divisors (22780238433).

51242837967 is a wasteful number, since it uses less digits than its factorization.

51242837967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434142 (or 434139 counting only the distinct ones).

The product of its digits is 5080320, while the sum is 54.

The spelling of 51242837967 in words is "fifty-one billion, two hundred forty-two million, eight hundred thirty-seven thousand, nine hundred sixty-seven".