145624149091 has 2 divisors, whose sum is σ = 145624149092. Its totient is φ = 145624149090.

The previous prime is 145624149059. The next prime is 145624149109. The reversal of 145624149091 is 190941426541.

Together with next prime (145624149109) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is an emirp because it is prime and its reverse (190941426541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 145624149091 - 2⁵ = 145624149059 is a prime.

It is a super-2 number, since 2×145624149091² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (145624147091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72812074545 + 72812074546.

It is an arithmetic number, because the mean of its divisors is an integer number (72812074546).

Almost surely, 2^145624149091 is an apocalyptic number.

145624149091 is a deficient number, since it is larger than the sum of its proper divisors (1).

145624149091 is an equidigital number, since it uses as much as digits as its factorization.

145624149091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 311040, while the sum is 46.

The spelling of 145624149091 in words is "one hundred forty-five billion, six hundred twenty-four million, one hundred forty-nine thousand, ninety-one".