51650258000 has 160 divisors (see below), whose sum is σ = 136700179200. Its totient is φ = 18719040000.

The previous prime is 51650257999. The next prime is 51650258017. The reversal of 51650258000 is 85205615.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6838226 + ... + 6845774.

It is an arithmetic number, because the mean of its divisors is an integer number (854376120).

Almost surely, 2^51650258000 is an apocalyptic number.

51650258000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51650258000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68350089600).

51650258000 is an abundant number, since it is smaller than the sum of its proper divisors (85049921200).

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

51650258000 is a wasteful number, since it uses less digits than its factorization.

51650258000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7894 (or 7878 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 32.

The spelling of 51650258000 in words is "fifty-one billion, six hundred fifty million, two hundred fifty-eight thousand".