51495408580 has 96 divisors (see below), whose sum is σ = 135632351232. Its totient is φ = 15954326400.

The previous prime is 51495408557. The next prime is 51495408589. The reversal of 51495408580 is 8580459415.

It is a super-2 number, since 2×51495408580² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51495408589) 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, 157065 + ... + 357295.

It is an arithmetic number, because the mean of its divisors is an integer number (1412836992).

Almost surely, 2^51495408580 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 51495408580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67816175616).

51495408580 is an abundant number, since it is smaller than the sum of its proper divisors (84136942652).

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

51495408580 is a wasteful number, since it uses less digits than its factorization.

51495408580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200425 (or 200423 counting only the distinct ones).

The product of its (nonzero) digits is 1152000, while the sum is 49.

The spelling of 51495408580 in words is "fifty-one billion, four hundred ninety-five million, four hundred eight thousand, five hundred eighty".