20164204677344 has 72 divisors (see below), whose sum is σ = 49127877464400. Its totient is φ = 7977047989248.

The previous prime is 20164204677269. The next prime is 20164204677413. The reversal of 20164204677344 is 44377640246102.

It is a junction number, because it is equal to n+sod(n) for n = 20164204677292 and 20164204677301.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 266289869 + ... + 266365580.

It is an arithmetic number, because the mean of its divisors is an integer number (682331631450).

Almost surely, 2^{20164204677344} is an apocalyptic number.

It is an amenable number.

20164204677344 is an abundant number, since it is smaller than the sum of its proper divisors (28963672787056).

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

20164204677344 is a wasteful number, since it uses less digits than its factorization.

20164204677344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532655492 (or 532655471 counting only the distinct ones).

The product of its (nonzero) digits is 5419008, while the sum is 50.

The spelling of 20164204677344 in words is "twenty trillion, one hundred sixty-four billion, two hundred four million, six hundred seventy-seven thousand, three hundred forty-four".