51655269280 has 48 divisors (see below), whose sum is σ = 122203710720. Its totient is φ = 20633640192.

The previous prime is 51655269241. The next prime is 51655269287. The reversal of 51655269280 is 8296255615.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (51655269287) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105720 + ... + 338359.

It is an arithmetic number, because the mean of its divisors is an integer number (2545910640).

Almost surely, 2^51655269280 is an apocalyptic number.

It is an amenable number.

51655269280 is an abundant number, since it is smaller than the sum of its proper divisors (70548441440).

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

51655269280 is a wasteful number, since it uses less digits than its factorization.

51655269280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444821 (or 444813 counting only the distinct ones).

The product of its (nonzero) digits is 1296000, while the sum is 49.

The spelling of 51655269280 in words is "fifty-one billion, six hundred fifty-five million, two hundred sixty-nine thousand, two hundred eighty".