145564673661031 has 2 divisors, whose sum is σ = 145564673661032. Its totient is φ = 145564673661030.

The previous prime is 145564673660969. The next prime is 145564673661137. The reversal of 145564673661031 is 130166376465541.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 145564673661031 - 2⁴¹ = 143365650405479 is a prime.

It is a super-2 number, since 2×145564673661031² (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 (145564673661431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72782336830515 + 72782336830516.

It is an arithmetic number, because the mean of its divisors is an integer number (72782336830516).

Almost surely, 2^{145564673661031} is an apocalyptic number.

145564673661031 is a deficient number, since it is larger than the sum of its proper divisors (1).

145564673661031 is an equidigital number, since it uses as much as digits as its factorization.

145564673661031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32659200, while the sum is 58.

The spelling of 145564673661031 in words is "one hundred forty-five trillion, five hundred sixty-four billion, six hundred seventy-three million, six hundred sixty-one thousand, thirty-one".