164400264390 has 32 divisors (see below), whose sum is σ = 398467182816. Its totient is φ = 43406009600.

The previous prime is 164400264359. The next prime is 164400264419. The reversal of 164400264390 is 93462004461.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27125727 + ... + 27131786.

It is an arithmetic number, because the mean of its divisors is an integer number (12452099463).

Almost surely, 2^164400264390 is an apocalyptic number.

164400264390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

164400264390 is an abundant number, since it is smaller than the sum of its proper divisors (234066918426).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

164400264390 is a wasteful number, since it uses less digits than its factorization.

164400264390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54257624.

The product of its (nonzero) digits is 124416, while the sum is 39.

The spelling of 164400264390 in words is "one hundred sixty-four billion, four hundred million, two hundred sixty-four thousand, three hundred ninety".