51352013000 has 32 divisors (see below), whose sum is σ = 120163712760. Its totient is φ = 20540804800.

The previous prime is 51352012979. The next prime is 51352013003. The reversal of 51352013000 is 31025315.

It can be written as a sum of positive squares in 4 ways, for example, as 7187309284 + 44164703716 = 84778^2 + 210154^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (51352013003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25675007 + ... + 25677006.

Almost surely, 2^51352013000 is an apocalyptic number.

51352013000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51352013000 is an abundant number, since it is smaller than the sum of its proper divisors (68811699760).

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

51352013000 is a wasteful number, since it uses less digits than its factorization.

51352013000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51352034 (or 51352020 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 20.

Adding to 51352013000 its reverse (31025315), we get a palindrome (51383038315).

The spelling of 51352013000 in words is "fifty-one billion, three hundred fifty-two million, thirteen thousand".