51580453652 has 48 divisors (see below), whose sum is σ = 111361837440. Its totient is φ = 20356693632.

The previous prime is 51580453633. The next prime is 51580453681. The reversal of 51580453652 is 25635408515.

It is a happy number.

It is a super-2 number, since 2×51580453652² (a number of 22 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, 16583 + ... + 321614.

It is an arithmetic number, because the mean of its divisors is an integer number (2320038280).

Almost surely, 2^51580453652 is an apocalyptic number.

51580453652 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

51580453652 is an abundant number, since it is smaller than the sum of its proper divisors (59781383788).

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

51580453652 is a wasteful number, since it uses less digits than its factorization.

51580453652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338640 (or 338638 counting only the distinct ones).

The product of its (nonzero) digits is 720000, while the sum is 44.

The spelling of 51580453652 in words is "fifty-one billion, five hundred eighty million, four hundred fifty-three thousand, six hundred fifty-two".