145520913039 has 4 divisors (see below), whose sum is σ = 194027884056. Its totient is φ = 97013942024.

The previous prime is 145520913029. The next prime is 145520913059. The reversal of 145520913039 is 930319025541.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 145520913039 - 2¹¹ = 145520910991 is a prime.

It is a super-2 number, since 2×145520913039² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145520913029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24253485504 + ... + 24253485509.

It is an arithmetic number, because the mean of its divisors is an integer number (48506971014).

Almost surely, 2^145520913039 is an apocalyptic number.

145520913039 is a deficient number, since it is larger than the sum of its proper divisors (48506971017).

145520913039 is an equidigital number, since it uses as much as digits as its factorization.

145520913039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48506971016.

The product of its (nonzero) digits is 145800, while the sum is 42.

The spelling of 145520913039 in words is "one hundred forty-five billion, five hundred twenty million, nine hundred thirteen thousand, thirty-nine".