51201633340 has 48 divisors (see below), whose sum is σ = 126321239520. Its totient is φ = 17186561280.

The previous prime is 51201633331. The next prime is 51201633377. The reversal of 51201633340 is 4333610215.

It is a junction number, because it is equal to n+sod(n) for n = 51201633299 and 51201633308.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8948475 + ... + 8954194.

It is an arithmetic number, because the mean of its divisors is an integer number (2631692490).

Almost surely, 2^51201633340 is an apocalyptic number.

It is an amenable number.

51201633340 is an abundant number, since it is smaller than the sum of its proper divisors (75119606180).

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

51201633340 is a wasteful number, since it uses less digits than its factorization.

51201633340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17902702 (or 17902700 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 28.

The spelling of 51201633340 in words is "fifty-one billion, two hundred one million, six hundred thirty-three thousand, three hundred forty".