153845213549 has 2 divisors, whose sum is σ = 153845213550. Its totient is φ = 153845213548.

The previous prime is 153845213537. The next prime is 153845213569. The reversal of 153845213549 is 945312548351.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 152232628900 + 1612584649 = 390170^2 + 40157^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-153845213549 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 153845213497 and 153845213506.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (153845213569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76922606774 + 76922606775.

It is an arithmetic number, because the mean of its divisors is an integer number (76922606775).

Almost surely, 2^153845213549 is an apocalyptic number.

It is an amenable number.

153845213549 is a deficient number, since it is larger than the sum of its proper divisors (1).

153845213549 is an equidigital number, since it uses as much as digits as its factorization.

153845213549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2592000, while the sum is 50.

The spelling of 153845213549 in words is "one hundred fifty-three billion, eight hundred forty-five million, two hundred thirteen thousand, five hundred forty-nine".