162156087777823 has 4 divisors (see below), whose sum is σ = 162156214119688. Its totient is φ = 162155961435960.

The previous prime is 162156087777763. The next prime is 162156087777877. The reversal of 162156087777823 is 328777780651261.

It is a happy number.

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 162156087777823 - 2⁴¹ = 159957064522271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (162156087777323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61225761 + ... + 63819322.

It is an arithmetic number, because the mean of its divisors is an integer number (40539053529922).

Almost surely, 2^{162156087777823} is an apocalyptic number.

162156087777823 is a deficient number, since it is larger than the sum of its proper divisors (126341865).

162156087777823 is a wasteful number, since it uses less digits than its factorization.

162156087777823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126341864.

The product of its (nonzero) digits is 331914240, while the sum is 70.

The spelling of 162156087777823 in words is "one hundred sixty-two trillion, one hundred fifty-six billion, eighty-seven million, seven hundred seventy-seven thousand, eight hundred twenty-three".