391136342155 has 16 divisors (see below), whose sum is σ = 505489973184. Its totient is φ = 288826876800.

The previous prime is 391136342101. The next prime is 391136342171. The reversal of 391136342155 is 551243631193.

It is not a de Polignac number, because 391136342155 - 2⁷ = 391136342027 is a prime.

It is a Duffinian number.

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, 1590730 + ... + 1820080.

It is an arithmetic number, because the mean of its divisors is an integer number (31593123324).

Almost surely, 2^391136342155 is an apocalyptic number.

391136342155 is a deficient number, since it is larger than the sum of its proper divisors (114353631029).

391136342155 is a wasteful number, since it uses less digits than its factorization.

391136342155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255606.

The product of its digits is 291600, while the sum is 43.

The spelling of 391136342155 in words is "three hundred ninety-one billion, one hundred thirty-six million, three hundred forty-two thousand, one hundred fifty-five".