145765893939 has 8 divisors (see below), whose sum is σ = 194357298432. Its totient is φ = 97175876040.

The previous prime is 145765893929. The next prime is 145765893971. The reversal of 145765893939 is 939398567541.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 145765893939 - 2²⁰ = 145764845363 is a prime.

It is not an unprimeable number, because it can be changed into a prime (145765893929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69759 + ... + 544424.

It is an arithmetic number, because the mean of its divisors is an integer number (24294662304).

Almost surely, 2^145765893939 is an apocalyptic number.

145765893939 is a deficient number, since it is larger than the sum of its proper divisors (48591404493).

145765893939 is an equidigital number, since it uses as much as digits as its factorization.

145765893939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 693297.

The product of its digits is 220449600, while the sum is 69.

The spelling of 145765893939 in words is "one hundred forty-five billion, seven hundred sixty-five million, eight hundred ninety-three thousand, nine hundred thirty-nine".