145855191739 has 2 divisors, whose sum is σ = 145855191740. Its totient is φ = 145855191738.

The previous prime is 145855191637. The next prime is 145855191749. The reversal of 145855191739 is 937191558541.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 145855191739 - 2¹⁹ = 145854667451 is a prime.

It is not a weakly prime, because it can be changed into another prime (145855191749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72927595869 + 72927595870.

It is an arithmetic number, because the mean of its divisors is an integer number (72927595870).

Almost surely, 2^145855191739 is an apocalyptic number.

145855191739 is a deficient number, since it is larger than the sum of its proper divisors (1).

145855191739 is an equidigital number, since it uses as much as digits as its factorization.

145855191739 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6804000, while the sum is 58.

The spelling of 145855191739 in words is "one hundred forty-five billion, eight hundred fifty-five million, one hundred ninety-one thousand, seven hundred thirty-nine".