50997696553 has 8 divisors (see below), whose sum is σ = 51655935240. Its totient is φ = 50342161920.

The previous prime is 50997696509. The next prime is 50997696571. The reversal of 50997696553 is 35569679905.

It can be written as a sum of positive squares in 4 ways, for example, as 539958169 + 50457738384 = 23237^2 + 224628^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-50997696553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50997696583) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 638038 + ... + 713503.

It is an arithmetic number, because the mean of its divisors is an integer number (6456991905).

Almost surely, 2^50997696553 is an apocalyptic number.

It is an amenable number.

50997696553 is a deficient number, since it is larger than the sum of its proper divisors (658238687).

50997696553 is a wasteful number, since it uses less digits than its factorization.

50997696553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1352027.

The product of its (nonzero) digits is 68890500, while the sum is 64.

The spelling of 50997696553 in words is "fifty billion, nine hundred ninety-seven million, six hundred ninety-six thousand, five hundred fifty-three".