51132132520 has 64 divisors (see below), whose sum is σ = 131505482880. Its totient is φ = 17527969536.

The previous prime is 51132132509. The next prime is 51132132521. The reversal of 51132132520 is 2523123115.

It is a super-2 number, since 2×51132132520² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51132132521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2101062 + ... + 2125258.

It is an arithmetic number, because the mean of its divisors is an integer number (2054773170).

Almost surely, 2^51132132520 is an apocalyptic number.

It is an amenable number.

51132132520 is an abundant number, since it is smaller than the sum of its proper divisors (80373350360).

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

51132132520 is a wasteful number, since it uses less digits than its factorization.

51132132520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31762 (or 31758 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

Adding to 51132132520 its reverse (2523123115), we get a palindrome (53655255635).

The spelling of 51132132520 in words is "fifty-one billion, one hundred thirty-two million, one hundred thirty-two thousand, five hundred twenty".