393506400744961 has 8 divisors (see below), whose sum is σ = 449807474790720. Its totient is φ = 337226795184048.

The previous prime is 393506400744931. The next prime is 393506400745013. The reversal of 393506400744961 is 169447004605393.

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

It is not a de Polignac number, because 393506400744961 - 2⁷ = 393506400744833 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 393506400744961.

It is not an unprimeable number, because it can be changed into a prime (393506400744901) 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, 5367081931 + ... + 5367155248.

It is an arithmetic number, because the mean of its divisors is an integer number (56225934348840).

Almost surely, 2^{393506400744961} is an apocalyptic number.

It is an amenable number.

393506400744961 is a deficient number, since it is larger than the sum of its proper divisors (56301074045759).

393506400744961 is a wasteful number, since it uses less digits than its factorization.

393506400744961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10734242423.

The product of its (nonzero) digits is 58786560, while the sum is 61.

The spelling of 393506400744961 in words is "three hundred ninety-three trillion, five hundred six billion, four hundred million, seven hundred forty-four thousand, nine hundred sixty-one".