164621281439054 has 12 divisors (see below), whose sum is σ = 271421038406112. Its totient is φ = 74827855199460.

The previous prime is 164621281439051. The next prime is 164621281439099. The reversal of 164621281439054 is 450934182126461.

It is a happy number.

It is a hoax number, since the sum of its digits (56) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164621281439051) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 340126614302 + ... + 340126614785.

It is an arithmetic number, because the mean of its divisors is an integer number (22618419867176).

Almost surely, 2^{164621281439054} is an apocalyptic number.

164621281439054 is a deficient number, since it is larger than the sum of its proper divisors (106799756967058).

164621281439054 is a wasteful number, since it uses less digits than its factorization.

164621281439054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 680253229111 (or 680253229100 counting only the distinct ones).

The product of its (nonzero) digits is 9953280, while the sum is 56.

The spelling of 164621281439054 in words is "one hundred sixty-four trillion, six hundred twenty-one billion, two hundred eighty-one million, four hundred thirty-nine thousand, fifty-four".