51786998240220 has 96 divisors (see below), whose sum is σ = 168120110269440. Its totient is φ = 13209437229120.

The previous prime is 51786998240209. The next prime is 51786998240303. The reversal of 51786998240220 is 2204289968715.

51786998240220 is a `hidden beast` number, since 5 + 1 + 7 + 86 + 9 + 98 + 240 + 220 = 666.

It is a congruent number.

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, 2084810376 + ... + 2084835215.

It is an arithmetic number, because the mean of its divisors is an integer number (1751251148640).

Almost surely, 2^{51786998240220} is an apocalyptic number.

It is an amenable number.

51786998240220 is an abundant number, since it is smaller than the sum of its proper divisors (116333112029220).

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

51786998240220 is a wasteful number, since it uses less digits than its factorization.

51786998240220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4169645632 (or 4169645624 counting only the distinct ones).

The product of its (nonzero) digits is 34836480, while the sum is 63.

The spelling of 51786998240220 in words is "fifty-one trillion, seven hundred eighty-six billion, nine hundred ninety-eight million, two hundred forty thousand, two hundred twenty".