17552553983 has 4 divisors (see below), whose sum is σ = 18315708528. Its totient is φ = 16789399440.

The previous prime is 17552553973. The next prime is 17552554021. The reversal of 17552553983 is 38935525571.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 17552553983 - 2¹⁰ = 17552552959 is a prime.

It is a super-2 number, since 2×17552553983² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17552553973) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 381577238 + ... + 381577283.

It is an arithmetic number, because the mean of its divisors is an integer number (4578927132).

Almost surely, 2^17552553983 is an apocalyptic number.

17552553983 is a deficient number, since it is larger than the sum of its proper divisors (763154545).

17552553983 is an equidigital number, since it uses as much as digits as its factorization.

17552553983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 763154544.

The product of its digits is 5670000, while the sum is 53.

The spelling of 17552553983 in words is "seventeen billion, five hundred fifty-two million, five hundred fifty-three thousand, nine hundred eighty-three".