150720721607 has 2 divisors, whose sum is σ = 150720721608. Its totient is φ = 150720721606.

The previous prime is 150720721577. The next prime is 150720721609. The reversal of 150720721607 is 706127027051.

It is a strong prime.

It is an emirp because it is prime and its reverse (706127027051) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 150720721607 - 2²⁶ = 150653612743 is a prime.

Together with 150720721609, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (150720721609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75360360803 + 75360360804.

It is an arithmetic number, because the mean of its divisors is an integer number (75360360804).

Almost surely, 2^150720721607 is an apocalyptic number.

150720721607 is a deficient number, since it is larger than the sum of its proper divisors (1).

150720721607 is an equidigital number, since it uses as much as digits as its factorization.

150720721607 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41160, while the sum is 38.

Adding to 150720721607 its reverse (706127027051), we get a palindrome (856847748658).

The spelling of 150720721607 in words is "one hundred fifty billion, seven hundred twenty million, seven hundred twenty-one thousand, six hundred seven".