51902698800 has 120 divisors (see below), whose sum is σ = 167223363984. Its totient is φ = 13760660480.

The previous prime is 51902698789. The next prime is 51902698811. The reversal of 51902698800 is 889620915.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (51902698789) and next prime (51902698811).

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 51902698800.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 82594 + ... + 332606.

Almost surely, 2^51902698800 is an apocalyptic number.

51902698800 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 51902698800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83611681992).

51902698800 is an abundant number, since it is smaller than the sum of its proper divisors (115320665184).

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

51902698800 is a wasteful number, since it uses less digits than its factorization.

51902698800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250207 (or 250196 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 48.

The spelling of 51902698800 in words is "fifty-one billion, nine hundred two million, six hundred ninety-eight thousand, eight hundred".