51352065451220 has 48 divisors (see below), whose sum is σ = 110710408531968. Its totient is φ = 19998531824640.

The previous prime is 51352065451199. The next prime is 51352065451231. The reversal of 51352065451220 is 2215456025315.

It is a super-2 number, since 2×51352065451220² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 142830557 + ... + 143189636.

It is an arithmetic number, because the mean of its divisors is an integer number (2306466844416).

Almost surely, 2^{51352065451220} is an apocalyptic number.

It is an amenable number.

51352065451220 is an abundant number, since it is smaller than the sum of its proper divisors (59358343080748).

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

51352065451220 is a wasteful number, since it uses less digits than its factorization.

51352065451220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286020440 (or 286020438 counting only the distinct ones).

The product of its (nonzero) digits is 360000, while the sum is 41.

The spelling of 51352065451220 in words is "fifty-one trillion, three hundred fifty-two billion, sixty-five million, four hundred fifty-one thousand, two hundred twenty".