720021902063 has 2 divisors, whose sum is σ = 720021902064. Its totient is φ = 720021902062.

The previous prime is 720021902057. The next prime is 720021902099. The reversal of 720021902063 is 360209120027.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 720021902063 - 2⁶ = 720021901999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (720021902003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 360010951031 + 360010951032.

It is an arithmetic number, because the mean of its divisors is an integer number (360010951032).

Almost surely, 2^720021902063 is an apocalyptic number.

720021902063 is a deficient number, since it is larger than the sum of its proper divisors (1).

720021902063 is an equidigital number, since it uses as much as digits as its factorization.

720021902063 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 32.

The spelling of 720021902063 in words is "seven hundred twenty billion, twenty-one million, nine hundred two thousand, sixty-three".