145235440038 has 128 divisors (see below), whose sum is σ = 330162739200. Its totient is φ = 42531216000.

The previous prime is 145235440019. The next prime is 145235440081. The reversal of 145235440038 is 830044532541.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a junction number, because it is equal to n+sod(n) for n = 145235439978 and 145235440005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 27139063 + ... + 27144413.

It is an arithmetic number, because the mean of its divisors is an integer number (2579396400).

Almost surely, 2^145235440038 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 145235440038, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (165081369600).

145235440038 is an abundant number, since it is smaller than the sum of its proper divisors (184927299162).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145235440038 is a wasteful number, since it uses less digits than its factorization.

145235440038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5495 (or 5469 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 39.

Adding to 145235440038 its reverse (830044532541), we get a palindrome (975279972579).

The spelling of 145235440038 in words is "one hundred forty-five billion, two hundred thirty-five million, four hundred forty thousand, thirty-eight".