51472213504 has 80 divisors (see below), whose sum is σ = 106305446016. Its totient is φ = 24872140800.

The previous prime is 51472213493. The next prime is 51472213537. The reversal of 51472213504 is 40531227415.

It is a self number, because there is not a number n which added to its sum of digits gives 51472213504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14870334 + ... + 14873794.

Almost surely, 2^51472213504 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51472213504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53152723008).

51472213504 is an abundant number, since it is smaller than the sum of its proper divisors (54833232512).

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

51472213504 is an equidigital number, since it uses as much as digits as its factorization.

51472213504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4447 (or 4431 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 34.

The spelling of 51472213504 in words is "fifty-one billion, four hundred seventy-two million, two hundred thirteen thousand, five hundred four".