20977842283753 has 2 divisors, whose sum is σ = 20977842283754. Its totient is φ = 20977842283752.

The previous prime is 20977842283747. The next prime is 20977842283763. The reversal of 20977842283753 is 35738224877902.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20125021432464 + 852820851289 = 4486092^2 + 923483^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20977842283753 is a prime.

It is a super-3 number, since 3×20977842283753³ (a number of 41 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (20977842283703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10488921141876 + 10488921141877.

It is an arithmetic number, because the mean of its divisors is an integer number (10488921141877).

Almost surely, 2^{20977842283753} is an apocalyptic number.

It is an amenable number.

20977842283753 is a deficient number, since it is larger than the sum of its proper divisors (1).

20977842283753 is an equidigital number, since it uses as much as digits as its factorization.

20977842283753 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 284497920, while the sum is 67.

The spelling of 20977842283753 in words is "twenty trillion, nine hundred seventy-seven billion, eight hundred forty-two million, two hundred eighty-three thousand, seven hundred fifty-three".