51118660261770 has 32 divisors (see below), whose sum is σ = 122796621338688. Its totient is φ = 13619216435328.

The previous prime is 51118660261759. The next prime is 51118660261777. The reversal of 51118660261770 is 7716206681115.

It is a super-2 number, since 2×51118660261770² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51118660261777) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 776610364 + ... + 776676183.

It is an arithmetic number, because the mean of its divisors is an integer number (3837394416834).

Almost surely, 2^{51118660261770} is an apocalyptic number.

51118660261770 is an abundant number, since it is smaller than the sum of its proper divisors (71677961076918).

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

51118660261770 is a wasteful number, since it uses less digits than its factorization.

51118660261770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1553287654.

The product of its (nonzero) digits is 846720, while the sum is 51.

The spelling of 51118660261770 in words is "fifty-one trillion, one hundred eighteen billion, six hundred sixty million, two hundred sixty-one thousand, seven hundred seventy".