51029638863 has 8 divisors (see below), whose sum is σ = 77759449728. Its totient is φ = 29159793624.

The previous prime is 51029638843. The next prime is 51029638883. The reversal of 51029638863 is 36883692015.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (51029638843) and next prime (51029638883).

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

It is not a de Polignac number, because 51029638863 - 2⁹ = 51029638351 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51029638823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1214991381 + ... + 1214991422.

It is an arithmetic number, because the mean of its divisors is an integer number (9719931216).

Almost surely, 2^51029638863 is an apocalyptic number.

51029638863 is a deficient number, since it is larger than the sum of its proper divisors (26729810865).

51029638863 is a wasteful number, since it uses less digits than its factorization.

51029638863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2429982813.

The product of its (nonzero) digits is 1866240, while the sum is 51.

The spelling of 51029638863 in words is "fifty-one billion, twenty-nine million, six hundred thirty-eight thousand, eight hundred sixty-three".