51648907898 has 16 divisors (see below), whose sum is σ = 90424836864. Its totient is φ = 21664283280.

The previous prime is 51648907837. The next prime is 51648907909. The reversal of 51648907898 is 89870984615.

It is a super-3 number, since 3×51648907898³ (a number of 33 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39246233 + ... + 39247548.

It is an arithmetic number, because the mean of its divisors is an integer number (5651552304).

Almost surely, 2^51648907898 is an apocalyptic number.

51648907898 is a deficient number, since it is larger than the sum of its proper divisors (38775928966).

51648907898 is a wasteful number, since it uses less digits than its factorization.

51648907898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78493837.

The product of its (nonzero) digits is 34836480, while the sum is 65.

The spelling of 51648907898 in words is "fifty-one billion, six hundred forty-eight million, nine hundred seven thousand, eight hundred ninety-eight".