145501632440 has 32 divisors (see below), whose sum is σ = 327393182880. Its totient is φ = 58198073472.

The previous prime is 145501632403. The next prime is 145501632473. The reversal of 145501632440 is 44236105541.

It is a self number, because there is not a number n which added to its sum of digits gives 145501632440.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1018034 + ... + 1152126.

It is an arithmetic number, because the mean of its divisors is an integer number (10231036965).

Almost surely, 2^145501632440 is an apocalyptic number.

145501632440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145501632440 is an abundant number, since it is smaller than the sum of its proper divisors (181891550440).

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

145501632440 is a wasteful number, since it uses less digits than its factorization.

145501632440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161231 (or 161227 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 35.

Adding to 145501632440 its reverse (44236105541), we get a palindrome (189737737981).

The spelling of 145501632440 in words is "one hundred forty-five billion, five hundred one million, six hundred thirty-two thousand, four hundred forty".