51929841438 has 24 divisors (see below), whose sum is σ = 112673379000. Its totient is φ = 17285528304.

The previous prime is 51929841391. The next prime is 51929841449. The reversal of 51929841438 is 83414892915.

It is a happy number.

51929841438 is a `hidden beast` number, since 5 + 192 + 9 + 8 + 414 + 38 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2021788 + ... + 2047311.

It is an arithmetic number, because the mean of its divisors is an integer number (4694724125).

Almost surely, 2^51929841438 is an apocalyptic number.

51929841438 is an abundant number, since it is smaller than the sum of its proper divisors (60743537562).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51929841438 is a wasteful number, since it uses less digits than its factorization.

51929841438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4069816 (or 4069813 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 54.

The spelling of 51929841438 in words is "fifty-one billion, nine hundred twenty-nine million, eight hundred forty-one thousand, four hundred thirty-eight".