145421707153 has 2 divisors, whose sum is σ = 145421707154. Its totient is φ = 145421707152.

The previous prime is 145421707127. The next prime is 145421707157. The reversal of 145421707153 is 351707124541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 138962691729 + 6459015424 = 372777^2 + 80368^2 .

It is a cyclic number.

It is not a de Polignac number, because 145421707153 - 2²⁹ = 144884836241 is a prime.

It is a super-2 number, since 2×145421707153² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (145421707157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72710853576 + 72710853577.

It is an arithmetic number, because the mean of its divisors is an integer number (72710853577).

Almost surely, 2^145421707153 is an apocalyptic number.

It is an amenable number.

145421707153 is a deficient number, since it is larger than the sum of its proper divisors (1).

145421707153 is an equidigital number, since it uses as much as digits as its factorization.

145421707153 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 117600, while the sum is 40.

The spelling of 145421707153 in words is "one hundred forty-five billion, four hundred twenty-one million, seven hundred seven thousand, one hundred fifty-three".