393380718081 has 16 divisors (see below), whose sum is σ = 564903123456. Its totient is φ = 242059545216.

The previous prime is 393380718079. The next prime is 393380718139. The reversal of 393380718081 is 180817083393.

It is not a de Polignac number, because 393380718081 - 2¹ = 393380718079 is a prime.

It is a super-2 number, since 2×393380718081² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (393380713081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28501 + ... + 887453.

It is an arithmetic number, because the mean of its divisors is an integer number (35306445216).

Almost surely, 2^393380718081 is an apocalyptic number.

It is an amenable number.

393380718081 is a deficient number, since it is larger than the sum of its proper divisors (171522405375).

393380718081 is a wasteful number, since it uses less digits than its factorization.

393380718081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 870712.

The product of its (nonzero) digits is 870912, while the sum is 51.

The spelling of 393380718081 in words is "three hundred ninety-three billion, three hundred eighty million, seven hundred eighteen thousand, eighty-one".