51020706000 has 640 divisors, whose sum is σ = 195293928960. Its totient is φ = 11317248000.

The previous prime is 51020705969. The next prime is 51020706001. The reversal of 51020706000 is 60702015.

It is a super-2 number, since 2×51020706000² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51020706001) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 41513386 + ... + 41514614.

It is an arithmetic number, because the mean of its divisors is an integer number (305146764).

Almost surely, 2^51020706000 is an apocalyptic number.

51020706000 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 51020706000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97646964480).

51020706000 is an abundant number, since it is smaller than the sum of its proper divisors (144273222960).

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

51020706000 is a wasteful number, since it uses less digits than its factorization.

51020706000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1320 (or 1304 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 21.

The spelling of 51020706000 in words is "fifty-one billion, twenty million, seven hundred six thousand".