51201518707268 has 48 divisors (see below), whose sum is σ = 95326363883520. Its totient is φ = 23979971933184.

The previous prime is 51201518707249. The next prime is 51201518707277. The reversal of 51201518707268 is 86270781510215.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17088413 + ... + 19859931.

It is an arithmetic number, because the mean of its divisors is an integer number (1985965914240).

Almost surely, 2^{51201518707268} is an apocalyptic number.

It is an amenable number.

51201518707268 is a deficient number, since it is larger than the sum of its proper divisors (44124845176252).

51201518707268 is a wasteful number, since it uses less digits than its factorization.

51201518707268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2772836 (or 2772834 counting only the distinct ones).

The product of its (nonzero) digits is 1881600, while the sum is 53.

The spelling of 51201518707268 in words is "fifty-one trillion, two hundred one billion, five hundred eighteen million, seven hundred seven thousand, two hundred sixty-eight".