51660155101650 has 96 divisors (see below), whose sum is σ = 128348317056960. Its totient is φ = 13751206644480.

The previous prime is 51660155101637. The next prime is 51660155101651. The reversal of 51660155101650 is 5610155106615.

It is not an unprimeable number, because it can be changed into a prime (51660155101651) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 229352484 + ... + 229577616.

It is an arithmetic number, because the mean of its divisors is an integer number (1336961636010).

Almost surely, 2^{51660155101650} is an apocalyptic number.

51660155101650 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51660155101650 is an abundant number, since it is smaller than the sum of its proper divisors (76688161955310).

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

51660155101650 is a wasteful number, since it uses less digits than its factorization.

51660155101650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227900 (or 227895 counting only the distinct ones).

The product of its (nonzero) digits is 135000, while the sum is 42.

The spelling of 51660155101650 in words is "fifty-one trillion, six hundred sixty billion, one hundred fifty-five million, one hundred one thousand, six hundred fifty".