201524842261 has 2 divisors, whose sum is σ = 201524842262. Its totient is φ = 201524842260.

The previous prime is 201524842243. The next prime is 201524842291. The reversal of 201524842261 is 162248425102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 188698147236 + 12826695025 = 434394^2 + 113255^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201524842261 is a prime.

It is a super-2 number, since 2×201524842261² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 201524842261.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201524842291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100762421130 + 100762421131.

It is an arithmetic number, because the mean of its divisors is an integer number (100762421131).

Almost surely, 2^201524842261 is an apocalyptic number.

It is an amenable number.

201524842261 is a deficient number, since it is larger than the sum of its proper divisors (1).

201524842261 is an equidigital number, since it uses as much as digits as its factorization.

201524842261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 61440, while the sum is 37.

The spelling of 201524842261 in words is "two hundred one billion, five hundred twenty-four million, eight hundred forty-two thousand, two hundred sixty-one".