51990829355 has 8 divisors (see below), whose sum is σ = 62941110912. Its totient is φ = 41224586368.

The previous prime is 51990829321. The next prime is 51990829381. The reversal of 51990829355 is 55392809915.

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

It is a cyclic number.

It is not a de Polignac number, because 51990829355 - 2⁶ = 51990829291 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51990829355.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46009019 + ... + 46010148.

It is an arithmetic number, because the mean of its divisors is an integer number (7867638864).

Almost surely, 2^51990829355 is an apocalyptic number.

51990829355 is a deficient number, since it is larger than the sum of its proper divisors (10950281557).

51990829355 is a wasteful number, since it uses less digits than its factorization.

51990829355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92019285.

The product of its (nonzero) digits is 4374000, while the sum is 56.

The spelling of 51990829355 in words is "fifty-one billion, nine hundred ninety million, eight hundred twenty-nine thousand, three hundred fifty-five".