63870020650739 has 2 divisors, whose sum is σ = 63870020650740. Its totient is φ = 63870020650738.

The previous prime is 63870020650729. The next prime is 63870020650763. The reversal of 63870020650739 is 93705602007836.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 63870020650739 - 2²⁴ = 63870003873523 is a prime.

It is a super-2 number, since 2×63870020650739² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (63870020650729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31935010325369 + 31935010325370.

It is an arithmetic number, because the mean of its divisors is an integer number (31935010325370).

Almost surely, 2^{63870020650739} is an apocalyptic number.

63870020650739 is a deficient number, since it is larger than the sum of its proper divisors (1).

63870020650739 is an equidigital number, since it uses as much as digits as its factorization.

63870020650739 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11430720, while the sum is 56.

The spelling of 63870020650739 in words is "sixty-three trillion, eight hundred seventy billion, twenty million, six hundred fifty thousand, seven hundred thirty-nine".