51883601616 has 180 divisors, whose sum is σ = 182402971296. Its totient is φ = 13476228480.

The previous prime is 51883601603. The next prime is 51883601633. The reversal of 51883601616 is 61610638815.

51883601616 is a `hidden beast` number, since 51 + 88 + 360 + 161 + 6 = 666.

It is a super-2 number, since 2×51883601616² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 90726 + ... + 334661.

Almost surely, 2^51883601616 is an apocalyptic number.

51883601616 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51883601616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91201485648).

51883601616 is an abundant number, since it is smaller than the sum of its proper divisors (130519369680).

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

51883601616 is a wasteful number, since it uses less digits than its factorization.

51883601616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425430 (or 425410 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The spelling of 51883601616 in words is "fifty-one billion, eight hundred eighty-three million, six hundred one thousand, six hundred sixteen".