164404502877 has 4 divisors (see below), whose sum is σ = 219206003840. Its totient is φ = 109603001916.

The previous prime is 164404502851. The next prime is 164404502879. The reversal of 164404502877 is 778205404461.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 164404502877 - 2⁶ = 164404502813 is a prime.

It is a super-3 number, since 3×164404502877³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164404502879) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27400750477 + ... + 27400750482.

It is an arithmetic number, because the mean of its divisors is an integer number (54801500960).

Almost surely, 2^164404502877 is an apocalyptic number.

It is an amenable number.

164404502877 is a deficient number, since it is larger than the sum of its proper divisors (54801500963).

164404502877 is an equidigital number, since it uses as much as digits as its factorization.

164404502877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54801500962.

The product of its (nonzero) digits is 1505280, while the sum is 48.

The spelling of 164404502877 in words is "one hundred sixty-four billion, four hundred four million, five hundred two thousand, eight hundred seventy-seven".