145621022404 has 72 divisors (see below), whose sum is σ = 302131456704. Its totient is φ = 61003588800.

The previous prime is 145621022389. The next prime is 145621022461. The reversal of 145621022404 is 404220126541.

145621022404 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4053039 + ... + 4088809.

It is an arithmetic number, because the mean of its divisors is an integer number (4196270232).

Almost surely, 2^145621022404 is an apocalyptic number.

It is an amenable number.

145621022404 is an abundant number, since it is smaller than the sum of its proper divisors (156510434300).

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

145621022404 is a wasteful number, since it uses less digits than its factorization.

145621022404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36457 (or 36444 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 31.

Adding to 145621022404 its reverse (404220126541), we get a palindrome (549841148945).

The spelling of 145621022404 in words is "one hundred forty-five billion, six hundred twenty-one million, twenty-two thousand, four hundred four".