145231513145 has 32 divisors (see below), whose sum is σ = 193779330048. Its totient is φ = 103929965568.

The previous prime is 145231513129. The next prime is 145231513181. The reversal of 145231513145 is 541315132541.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 145231513145 - 2⁴ = 145231513129 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 70352 + ... + 543518.

It is an arithmetic number, because the mean of its divisors is an integer number (6055604064).

Almost surely, 2^145231513145 is an apocalyptic number.

It is an amenable number.

145231513145 is a deficient number, since it is larger than the sum of its proper divisors (48547816903).

145231513145 is a wasteful number, since it uses less digits than its factorization.

145231513145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473369.

The product of its digits is 36000, while the sum is 35.

Adding to 145231513145 its reverse (541315132541), we get a palindrome (686546645686).

The spelling of 145231513145 in words is "one hundred forty-five billion, two hundred thirty-one million, five hundred thirteen thousand, one hundred forty-five".