1663726424201 has 8 divisors (see below), whose sum is σ = 1738950993024. Its totient is φ = 1588742575200.

The previous prime is 1663726424197. The next prime is 1663726424219. The reversal of 1663726424201 is 1024246273661.

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

It is a cyclic number.

It is not a de Polignac number, because 1663726424201 - 2² = 1663726424197 is a prime.

It is a super-2 number, since 2×1663726424201² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1663726424251) 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, 60165821 + ... + 60193466.

It is an arithmetic number, because the mean of its divisors is an integer number (217368874128).

Almost surely, 2^{1663726424201} is an apocalyptic number.

It is an amenable number.

1663726424201 is a deficient number, since it is larger than the sum of its proper divisors (75224568823).

1663726424201 is a wasteful number, since it uses less digits than its factorization.

1663726424201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120359911.

The product of its (nonzero) digits is 580608, while the sum is 44.

The spelling of 1663726424201 in words is "one trillion, six hundred sixty-three billion, seven hundred twenty-six million, four hundred twenty-four thousand, two hundred one".