397798544155 has 8 divisors (see below), whose sum is σ = 477485198784. Its totient is φ = 318154204800.

The previous prime is 397798544123. The next prime is 397798544161. The reversal of 397798544155 is 551445897793.

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

It is not a de Polignac number, because 397798544155 - 2⁵ = 397798544123 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10558131 + ... + 10595740.

It is an arithmetic number, because the mean of its divisors is an integer number (59685649848).

Almost surely, 2^397798544155 is an apocalyptic number.

397798544155 is a deficient number, since it is larger than the sum of its proper divisors (79686654629).

397798544155 is a wasteful number, since it uses less digits than its factorization.

397798544155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21157637.

The product of its digits is 190512000, while the sum is 67.

The spelling of 397798544155 in words is "three hundred ninety-seven billion, seven hundred ninety-eight million, five hundred forty-four thousand, one hundred fifty-five".