51870454272 has 320 divisors, whose sum is σ = 188977071360. Its totient is φ = 13679788032.

The previous prime is 51870454267. The next prime is 51870454283. The reversal of 51870454272 is 27245407815.

51870454272 is a `hidden beast` number, since 5 + 187 + 0 + 45 + 427 + 2 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1237368 + ... + 1278600.

It is an arithmetic number, because the mean of its divisors is an integer number (590553348).

Almost surely, 2^51870454272 is an apocalyptic number.

51870454272 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51870454272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94488535680).

51870454272 is an abundant number, since it is smaller than the sum of its proper divisors (137106617088).

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

51870454272 is a wasteful number, since it uses less digits than its factorization.

51870454272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41280 (or 41258 counting only the distinct ones).

The product of its (nonzero) digits is 627200, while the sum is 45.

The spelling of 51870454272 in words is "fifty-one billion, eight hundred seventy million, four hundred fifty-four thousand, two hundred seventy-two".