395405602091 has 4 divisors (see below), whose sum is σ = 412597150032. Its totient is φ = 378214054152.

The previous prime is 395405602087. The next prime is 395405602093. The reversal of 395405602091 is 190206504593.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 395405602091 - 2² = 395405602087 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (395405602093) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8595773936 + ... + 8595773981.

It is an arithmetic number, because the mean of its divisors is an integer number (103149287508).

Almost surely, 2^395405602091 is an apocalyptic number.

395405602091 is a deficient number, since it is larger than the sum of its proper divisors (17191547941).

395405602091 is a wasteful number, since it uses less digits than its factorization.

395405602091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17191547940.

The product of its (nonzero) digits is 291600, while the sum is 44.

The spelling of 395405602091 in words is "three hundred ninety-five billion, four hundred five million, six hundred two thousand, ninety-one".