51532632450 has 144 divisors (see below), whose sum is σ = 153131485416. Its totient is φ = 12342067200.

The previous prime is 51532632443. The next prime is 51532632479. The reversal of 51532632450 is 5423623515.

51532632450 is a `hidden beast` number, since 5 + 1 + 5 + 326 + 324 + 5 + 0 = 666.

It can be written as a sum of positive squares in 12 ways, for example, as 811737081 + 50720895369 = 28491^2 + 225213^2 .

It is a super-2 number, since 2×51532632450² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 97410 + ... + 335490.

Almost surely, 2^51532632450 is an apocalyptic number.

51532632450 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 51532632450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76565742708).

51532632450 is an abundant number, since it is smaller than the sum of its proper divisors (101598852966).

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

51532632450 is a wasteful number, since it uses less digits than its factorization.

51532632450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238149 (or 238141 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 36.

The spelling of 51532632450 in words is "fifty-one billion, five hundred thirty-two million, six hundred thirty-two thousand, four hundred fifty".