17920230725957 has 16 divisors (see below), whose sum is σ = 21048401710080. Its totient is φ = 14934671250048.

The previous prime is 17920230725893. The next prime is 17920230726029. The reversal of 17920230725957 is 75952703202971.

It is a cyclic number.

It is not a de Polignac number, because 17920230725957 - 2⁶ = 17920230725893 is a prime.

It is a super-2 number, since 2×17920230725957² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 17920230725896 and 17920230725905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17920230721957) 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 15 ways as a sum of consecutive naturals, for example, 23668328 + ... + 24413729.

It is an arithmetic number, because the mean of its divisors is an integer number (1315525106880).

Almost surely, 2^{17920230725957} is an apocalyptic number.

It is an amenable number.

17920230725957 is a deficient number, since it is larger than the sum of its proper divisors (3128170984123).

17920230725957 is a wasteful number, since it uses less digits than its factorization.

17920230725957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48083540.

The product of its (nonzero) digits is 16669800, while the sum is 59.

The spelling of 17920230725957 in words is "seventeen trillion, nine hundred twenty billion, two hundred thirty million, seven hundred twenty-five thousand, nine hundred fifty-seven".