20046665966976 has 640 divisors, whose sum is σ = 68611441029120. Its totient is φ = 5753659392000.

The previous prime is 20046665966963. The next prime is 20046665966983. The reversal of 20046665966976 is 67966956664002.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 166107616 + ... + 166228256.

It is an arithmetic number, because the mean of its divisors is an integer number (107205376608).

Almost surely, 2^{20046665966976} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20046665966976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34305720514560).

20046665966976 is an abundant number, since it is smaller than the sum of its proper divisors (48564775062144).

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

20046665966976 is a wasteful number, since it uses less digits than its factorization.

20046665966976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120756 (or 120735 counting only the distinct ones).

The product of its (nonzero) digits is 1058158080, while the sum is 72.

The spelling of 20046665966976 in words is "twenty trillion, forty-six billion, six hundred sixty-five million, nine hundred sixty-six thousand, nine hundred seventy-six".