320417532155 has 16 divisors (see below), whose sum is σ = 439438970880. Its totient is φ = 219710272992.

The previous prime is 320417532143. The next prime is 320417532161. The reversal of 320417532155 is 551235714023.

It is not a de Polignac number, because 320417532155 - 2⁸ = 320417531899 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3049586 + ... + 3152904.

It is an arithmetic number, because the mean of its divisors is an integer number (27464935680).

Almost surely, 2^320417532155 is an apocalyptic number.

320417532155 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

320417532155 is a deficient number, since it is larger than the sum of its proper divisors (119021438725).

320417532155 is a wasteful number, since it uses less digits than its factorization.

320417532155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191938.

The product of its (nonzero) digits is 126000, while the sum is 38.

The spelling of 320417532155 in words is "three hundred twenty billion, four hundred seventeen million, five hundred thirty-two thousand, one hundred fifty-five".