1721322993963 has 8 divisors (see below), whose sum is σ = 2295107712576. Its totient is φ = 1147543469000.

The previous prime is 1721322993911. The next prime is 1721322994031. The reversal of 1721322993963 is 3693992231271.

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 1721322993963 - 2⁶ = 1721322993899 is a prime.

It is a super-2 number, since 2×1721322993963² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1721322993163) 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, 444933 + ... + 1908038.

It is an arithmetic number, because the mean of its divisors is an integer number (286888464072).

Almost surely, 2^{1721322993963} is an apocalyptic number.

1721322993963 is a deficient number, since it is larger than the sum of its proper divisors (573784718613).

1721322993963 is a wasteful number, since it uses less digits than its factorization.

1721322993963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2596825.

The product of its digits is 6613488, while the sum is 57.

The spelling of 1721322993963 in words is "one trillion, seven hundred twenty-one billion, three hundred twenty-two million, nine hundred ninety-three thousand, nine hundred sixty-three".