720101009987 has 2 divisors, whose sum is σ = 720101009988. Its totient is φ = 720101009986.

The previous prime is 720101009951. The next prime is 720101009993. The reversal of 720101009987 is 789900101027.

It is a strong prime.

It is an emirp because it is prime and its reverse (789900101027) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 720101009987 - 2¹⁸ = 720100747843 is a prime.

It is not a weakly prime, because it can be changed into another prime (720101002987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 360050504993 + 360050504994.

It is an arithmetic number, because the mean of its divisors is an integer number (360050504994).

Almost surely, 2^720101009987 is an apocalyptic number.

720101009987 is a deficient number, since it is larger than the sum of its proper divisors (1).

720101009987 is an equidigital number, since it uses as much as digits as its factorization.

720101009987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 63504, while the sum is 44.

The spelling of 720101009987 in words is "seven hundred twenty billion, one hundred one million, nine thousand, nine hundred eighty-seven".