153745480433581 has 2 divisors, whose sum is σ = 153745480433582. Its totient is φ = 153745480433580.

The previous prime is 153745480433543. The next prime is 153745480433599. The reversal of 153745480433581 is 185334084547351.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 151503258699556 + 2242221734025 = 12308666^2 + 1497405^2 .

It is a cyclic number.

It is not a de Polignac number, because 153745480433581 - 2¹¹ = 153745480431533 is a prime.

It is a super-2 number, since 2×153745480433581² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (153745480433521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76872740216790 + 76872740216791.

It is an arithmetic number, because the mean of its divisors is an integer number (76872740216791).

Almost surely, 2^{153745480433581} is an apocalyptic number.

It is an amenable number.

153745480433581 is a deficient number, since it is larger than the sum of its proper divisors (1).

153745480433581 is an equidigital number, since it uses as much as digits as its factorization.

153745480433581 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96768000, while the sum is 61.

The spelling of 153745480433581 in words is "one hundred fifty-three trillion, seven hundred forty-five billion, four hundred eighty million, four hundred thirty-three thousand, five hundred eighty-one".