53899917617 has 64 divisors (see below), whose sum is σ = 71249117184. Its totient is φ = 39607349760.

The previous prime is 53899917601. The next prime is 53899917641. The reversal of 53899917617 is 71671999835.

It is a cyclic number.

It is not a de Polignac number, because 53899917617 - 2⁴ = 53899917601 is a prime.

It is a super-2 number, since 2×53899917617² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (53899917677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 19478168 + ... + 19480934.

It is an arithmetic number, because the mean of its divisors is an integer number (1113267456).

Almost surely, 2^53899917617 is an apocalyptic number.

It is an amenable number.

53899917617 is a deficient number, since it is larger than the sum of its proper divisors (17349199567).

53899917617 is a wasteful number, since it uses less digits than its factorization.

53899917617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3078.

The product of its digits is 25719120, while the sum is 65.

The spelling of 53899917617 in words is "fifty-three billion, eight hundred ninety-nine million, nine hundred seventeen thousand, six hundred seventeen".