51661056350 has 24 divisors (see below), whose sum is σ = 96189023568. Its totient is φ = 20643033600.

The previous prime is 51661056313. The next prime is 51661056353. The reversal of 51661056350 is 5365016615.

51661056350 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51661056353) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 485891 + ... + 582590.

It is an arithmetic number, because the mean of its divisors is an integer number (4007875982).

Almost surely, 2^51661056350 is an apocalyptic number.

51661056350 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51661056350 is a deficient number, since it is larger than the sum of its proper divisors (44527967218).

51661056350 is a wasteful number, since it uses less digits than its factorization.

51661056350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1069460 (or 1069455 counting only the distinct ones).

The product of its (nonzero) digits is 81000, while the sum is 38.

The spelling of 51661056350 in words is "fifty-one billion, six hundred sixty-one million, fifty-six thousand, three hundred fifty".