19427821697001 has 8 divisors (see below), whose sum is σ = 26506175338720. Its totient is φ = 12650674593312.

The previous prime is 19427821696973. The next prime is 19427821697077. The reversal of 19427821697001 is 10079612872491.

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

It is not a de Polignac number, because 19427821697001 - 2⁶ = 19427821696937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19427821697201) 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, 75301634356 + ... + 75301634613.

It is an arithmetic number, because the mean of its divisors is an integer number (3313271917340).

Almost surely, 2^{19427821697001} is an apocalyptic number.

It is an amenable number.

19427821697001 is a deficient number, since it is larger than the sum of its proper divisors (7078353641719).

19427821697001 is a wasteful number, since it uses less digits than its factorization.

19427821697001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150603269015.

The product of its (nonzero) digits is 3048192, while the sum is 57.

The spelling of 19427821697001 in words is "nineteen trillion, four hundred twenty-seven billion, eight hundred twenty-one million, six hundred ninety-seven thousand, one".