51902698849 has 8 divisors (see below), whose sum is σ = 52704749120. Its totient is φ = 51101454096.

The previous prime is 51902698831. The next prime is 51902698853. The reversal of 51902698849 is 94889620915.

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 51902698849 - 2¹⁷ = 51902567777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51902698949) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70869 + ... + 329890.

It is an arithmetic number, because the mean of its divisors is an integer number (6588093640).

Almost surely, 2^51902698849 is an apocalyptic number.

It is an amenable number.

51902698849 is a deficient number, since it is larger than the sum of its proper divisors (802050271).

51902698849 is a wasteful number, since it uses less digits than its factorization.

51902698849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402759.

The product of its (nonzero) digits is 11197440, while the sum is 61.

The spelling of 51902698849 in words is "fifty-one billion, nine hundred two million, six hundred ninety-eight thousand, eight hundred forty-nine".