51430716780 has 96 divisors (see below), whose sum is σ = 148833054720. Its totient is φ = 13256221440.

The previous prime is 51430716763. The next prime is 51430716781. The reversal of 51430716780 is 8761703415.

It is not an unprimeable number, because it can be changed into a prime (51430716781) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1544062 + ... + 1577018.

It is an arithmetic number, because the mean of its divisors is an integer number (1550344320).

Almost surely, 2^51430716780 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 51430716780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74416527360).

51430716780 is an abundant number, since it is smaller than the sum of its proper divisors (97402337940).

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

51430716780 is a wasteful number, since it uses less digits than its factorization.

51430716780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33839 (or 33837 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 42.

The spelling of 51430716780 in words is "fifty-one billion, four hundred thirty million, seven hundred sixteen thousand, seven hundred eighty".