7381720063 has 2 divisors, whose sum is σ = 7381720064. Its totient is φ = 7381720062.

The previous prime is 7381720051. The next prime is 7381720067. The reversal of 7381720063 is 3600271837.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7381720063 - 2¹³ = 7381711871 is a prime.

It is a super-4 number, since 4×7381720063⁴ (a number of 41 digits) contains 4444 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7381720067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3690860031 + 3690860032.

It is an arithmetic number, because the mean of its divisors is an integer number (3690860032).

Almost surely, 2^7381720063 is an apocalyptic number.

7381720063 is a deficient number, since it is larger than the sum of its proper divisors (1).

7381720063 is an equidigital number, since it uses as much as digits as its factorization.

7381720063 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42336, while the sum is 37.

The square root of 7381720063 is about 85916.9369973115. The cubic root of 7381720063 is about 1947.0892415912.

The spelling of 7381720063 in words is "seven billion, three hundred eighty-one million, seven hundred twenty thousand, sixty-three".