4021737940453 has 2 divisors, whose sum is σ = 4021737940454. Its totient is φ = 4021737940452.

The previous prime is 4021737940447. The next prime is 4021737940463. The reversal of 4021737940453 is 3540497371204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3705463301764 + 316274638689 = 1924958^2 + 562383^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4021737940453 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4021737940397 and 4021737940406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4021737940463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2010868970226 + 2010868970227.

It is an arithmetic number, because the mean of its divisors is an integer number (2010868970227).

Almost surely, 2^{4021737940453} is an apocalyptic number.

It is an amenable number.

4021737940453 is a deficient number, since it is larger than the sum of its proper divisors (1).

4021737940453 is an equidigital number, since it uses as much as digits as its factorization.

4021737940453 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2540160, while the sum is 49.

The spelling of 4021737940453 in words is "four trillion, twenty-one billion, seven hundred thirty-seven million, nine hundred forty thousand, four hundred fifty-three".