50699967992881 has 27 divisors (see below), whose sum is σ = 53123608462113. Its totient is φ = 48385620185760.

The previous prime is 50699967992873. The next prime is 50699967992903. The reversal of 50699967992881 is 18829976999605.

The square root of 50699967992881 is 7120391.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 20239282418481 + 30460685574400 = 4498809^2 + 5519120^2 .

It is not a de Polignac number, because 50699967992881 - 2³ = 50699967992873 is a prime.

It is a super-3 number, since 3×50699967992881³ (a number of 42 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 50699967992792 and 50699967992801.

It is not an unprimeable number, because it can be changed into a prime (50699967995881) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 13963084936 + ... + 13963088566.

Almost surely, 2^{50699967992881} is an apocalyptic number.

50699967992881 is the 7120391-st square number.

50699967992881 is the 3560196-th centered octagonal number.

It is an amenable number.

50699967992881 is a deficient number, since it is larger than the sum of its proper divisors (2423640469232).

50699967992881 is an frugal number, since it uses more digits than its factorization.

50699967992881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7442 (or 3721 counting only the distinct ones).

The product of its (nonzero) digits is 9523422720, while the sum is 88.

The spelling of 50699967992881 in words is "fifty trillion, six hundred ninety-nine billion, nine hundred sixty-seven million, nine hundred ninety-two thousand, eight hundred eighty-one".