51298207996 has 144 divisors (see below), whose sum is σ = 114081760800. Its totient is φ = 20044910592.

The previous prime is 51298207991. The next prime is 51298208011. The reversal of 51298207996 is 69970289215.

It is a super-2 number, since 2×51298207996² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (58).

It is a self number, because there is not a number n which added to its sum of digits gives 51298207996.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51298207991) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 46761720 + ... + 46762816.

It is an arithmetic number, because the mean of its divisors is an integer number (792234450).

Almost surely, 2^51298207996 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51298207996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57040880400).

51298207996 is an abundant number, since it is smaller than the sum of its proper divisors (62783552804).

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

51298207996 is a wasteful number, since it uses less digits than its factorization.

51298207996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1596 (or 1587 counting only the distinct ones).

The product of its (nonzero) digits is 4898880, while the sum is 58.

The spelling of 51298207996 in words is "fifty-one billion, two hundred ninety-eight million, two hundred seven thousand, nine hundred ninety-six".