20770641042816 has 128 divisors (see below), whose sum is σ = 63057645216000. Its totient is φ = 5934100543488.

The previous prime is 20770641042803. The next prime is 20770641042839. The reversal of 20770641042816 is 61824014607702.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44639335 + ... + 45102233.

It is an arithmetic number, because the mean of its divisors is an integer number (492637853250).

Almost surely, 2^{20770641042816} is an apocalyptic number.

It is an amenable number.

20770641042816 is an abundant number, since it is smaller than the sum of its proper divisors (42287004173184).

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

20770641042816 is a wasteful number, since it uses less digits than its factorization.

20770641042816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479616 (or 479604 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 48.

The spelling of 20770641042816 in words is "twenty trillion, seven hundred seventy billion, six hundred forty-one million, forty-two thousand, eight hundred sixteen".