51442352280 has 96 divisors (see below), whose sum is σ = 182386535760. Its totient is φ = 12470872320.

The previous prime is 51442352267. The next prime is 51442352287. The reversal of 51442352280 is 8225324415.

51442352280 is a `hidden beast` number, since 5 + 1 + 4 + 423 + 5 + 228 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51442352287) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6491287 + ... + 6499206.

Almost surely, 2^51442352280 is an apocalyptic number.

It is an amenable number.

51442352280 is an abundant number, since it is smaller than the sum of its proper divisors (130944183480).

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

51442352280 is a wasteful number, since it uses less digits than its factorization.

51442352280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12990521 (or 12990514 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 36.

Adding to 51442352280 its reverse (8225324415), we get a palindrome (59667676695).

The spelling of 51442352280 in words is "fifty-one billion, four hundred forty-two million, three hundred fifty-two thousand, two hundred eighty".