51208847454 has 32 divisors (see below), whose sum is σ = 106208532000. Its totient is φ = 16440689664.

The previous prime is 51208847449. The next prime is 51208847489. The reversal of 51208847454 is 45474880215.

It is a happy number.

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, 288619 + ... + 430950.

It is an arithmetic number, because the mean of its divisors is an integer number (3319016625).

Almost surely, 2^51208847454 is an apocalyptic number.

51208847454 is an abundant number, since it is smaller than the sum of its proper divisors (54999684546).

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

51208847454 is a wasteful number, since it uses less digits than its factorization.

51208847454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 720012.

The product of its (nonzero) digits is 1433600, while the sum is 48.

The spelling of 51208847454 in words is "fifty-one billion, two hundred eight million, eight hundred forty-seven thousand, four hundred fifty-four".