151201720553 has 6 divisors (see below), whose sum is σ = 163727307054. Its totient is φ = 139570818816.

The previous prime is 151201720547. The next prime is 151201720561. The reversal of 151201720553 is 355027102151.

It can be written as a sum of positive squares in 3 ways, for example, as 1438912489 + 149762808064 = 37933^2 + 386992^2 .

It is not a de Polignac number, because 151201720553 - 2⁶ = 151201720489 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (151201720513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 447342200 + ... + 447342537.

It is an arithmetic number, because the mean of its divisors is an integer number (27287884509).

Almost surely, 2^151201720553 is an apocalyptic number.

151201720553 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

151201720553 is a deficient number, since it is larger than the sum of its proper divisors (12525586501).

151201720553 is an equidigital number, since it uses as much as digits as its factorization.

151201720553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 894684763 (or 894684750 counting only the distinct ones).

The product of its (nonzero) digits is 10500, while the sum is 32.

The spelling of 151201720553 in words is "one hundred fifty-one billion, two hundred one million, seven hundred twenty thousand, five hundred fifty-three".