51774799680208 has 60 divisors (see below), whose sum is σ = 110263770230404. Its totient is φ = 23533651468800.

The previous prime is 51774799680113. The next prime is 51774799680341. The reversal of 51774799680208 is 80208699747715.

It can be written as a sum of positive squares in 2 ways, for example, as 34131674741824 + 17643124938384 = 5842232^2 + 4200372^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 167140828 + ... + 167450308.

Almost surely, 2^{51774799680208} is an apocalyptic number.

It is an amenable number.

51774799680208 is an abundant number, since it is smaller than the sum of its proper divisors (58488970550196).

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

51774799680208 is a wasteful number, since it uses less digits than its factorization.

51774799680208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395924 (or 395907 counting only the distinct ones).

The product of its (nonzero) digits is 426746880, while the sum is 73.

The spelling of 51774799680208 in words is "fifty-one trillion, seven hundred seventy-four billion, seven hundred ninety-nine million, six hundred eighty thousand, two hundred eight".