50997696551 has 16 divisors (see below), whose sum is σ = 55471814496. Its totient is φ = 46688080896.

The previous prime is 50997696509. The next prime is 50997696571. The reversal of 50997696551 is 15569679905.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 50997696551 - 2⁶ = 50997696487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50997696571) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3002555 + ... + 3019491.

It is an arithmetic number, because the mean of its divisors is an integer number (3466988406).

Almost surely, 2^50997696551 is an apocalyptic number.

50997696551 is a deficient number, since it is larger than the sum of its proper divisors (4474117945).

50997696551 is a wasteful number, since it uses less digits than its factorization.

50997696551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21778.

The product of its (nonzero) digits is 22963500, while the sum is 62.

The spelling of 50997696551 in words is "fifty billion, nine hundred ninety-seven million, six hundred ninety-six thousand, five hundred fifty-one".