162978188455 has 4 divisors (see below), whose sum is σ = 195573826152. Its totient is φ = 130382550760.

The previous prime is 162978188419. The next prime is 162978188473. The reversal of 162978188455 is 554881879261.

162978188455 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 554881879261 = 7717 ⋅71903833.

It is not a de Polignac number, because 162978188455 - 2¹³ = 162978180263 is a prime.

It is a Duffinian number.

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 16297818841 + ... + 16297818850.

It is an arithmetic number, because the mean of its divisors is an integer number (48893456538).

Almost surely, 2^162978188455 is an apocalyptic number.

162978188455 is a deficient number, since it is larger than the sum of its proper divisors (32595637697).

162978188455 is an equidigital number, since it uses as much as digits as its factorization.

162978188455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32595637696.

The product of its digits is 38707200, while the sum is 64.

The spelling of 162978188455 in words is "one hundred sixty-two billion, nine hundred seventy-eight million, one hundred eighty-eight thousand, four hundred fifty-five".