51704840880 has 1440 divisors, whose sum is σ = 237221816832. Its totient is φ = 9792921600.

The previous prime is 51704840833. The next prime is 51704840897. The reversal of 51704840880 is 8804840715.

It is a super-2 number, since 2×51704840880² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 1202438139 + ... + 1202438181.

Almost surely, 2^51704840880 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 51704840880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118610908416).

51704840880 is an abundant number, since it is smaller than the sum of its proper divisors (185516975952).

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

51704840880 is a wasteful number, since it uses less digits than its factorization.

51704840880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167 (or 135 counting only the distinct ones).

The product of its (nonzero) digits is 286720, while the sum is 45.

The spelling of 51704840880 in words is "fifty-one billion, seven hundred four million, eight hundred forty thousand, eight hundred eighty".