51989090783 has 4 divisors (see below), whose sum is σ = 59416103760. Its totient is φ = 44562077808.

The previous prime is 51989090779. The next prime is 51989090837. The reversal of 51989090783 is 38709098915.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51989090783 - 2² = 51989090779 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51989090383) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 3713506478 + ... + 3713506491.

It is an arithmetic number, because the mean of its divisors is an integer number (14854025940).

Almost surely, 2^51989090783 is an apocalyptic number.

51989090783 is a deficient number, since it is larger than the sum of its proper divisors (7427012977).

51989090783 is an equidigital number, since it uses as much as digits as its factorization.

51989090783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7427012976.

The product of its (nonzero) digits is 4898880, while the sum is 59.

The spelling of 51989090783 in words is "fifty-one billion, nine hundred eighty-nine million, ninety thousand, seven hundred eighty-three".