126561888001 has 8 divisors (see below), whose sum is σ = 128629572480. Its totient is φ = 124499459568.

The previous prime is 126561887999. The next prime is 126561888029. The reversal of 126561888001 is 100888165621.

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 126561888001 - 2¹ = 126561887999 is a prime.

It is a super-2 number, since 2×126561888001² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126561888041) 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, 1265446 + ... + 1361791.

It is an arithmetic number, because the mean of its divisors is an integer number (16078696560).

Almost surely, 2^126561888001 is an apocalyptic number.

It is an amenable number.

126561888001 is a deficient number, since it is larger than the sum of its proper divisors (2067684479).

126561888001 is an equidigital number, since it uses as much as digits as its factorization.

126561888001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2628023.

The product of its (nonzero) digits is 184320, while the sum is 46.

The spelling of 126561888001 in words is "one hundred twenty-six billion, five hundred sixty-one million, eight hundred eighty-eight thousand, one".