661023316363 has 8 divisors (see below), whose sum is σ = 662312516096. Its totient is φ = 659734929000.

The previous prime is 661023316319. The next prime is 661023316367. The reversal of 661023316363 is 363613320166.

661023316363 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-661023316363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (661023316367) 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, 1438798 + ... + 1841788.

It is an arithmetic number, because the mean of its divisors is an integer number (82789064512).

Almost surely, 2^661023316363 is an apocalyptic number.

661023316363 is a deficient number, since it is larger than the sum of its proper divisors (1289199733).

661023316363 is a wasteful number, since it uses less digits than its factorization.

661023316363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406185.

The product of its (nonzero) digits is 209952, while the sum is 40.

The spelling of 661023316363 in words is "six hundred sixty-one billion, twenty-three million, three hundred sixteen thousand, three hundred sixty-three".