145551440442 has 16 divisors (see below), whose sum is σ = 291106835712. Its totient is φ = 48516487680.

The previous prime is 145551440399. The next prime is 145551440581. The reversal of 145551440442 is 244044155541.

145551440442 is digitally balanced in base 2 and base 7, because in such bases it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 145551440442.

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 7 ways as a sum of consecutive naturals, for example, 556567 + ... + 775157.

It is an arithmetic number, because the mean of its divisors is an integer number (18194177232).

Almost surely, 2^145551440442 is an apocalyptic number.

145551440442 is an abundant number, since it is smaller than the sum of its proper divisors (145555395270).

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

145551440442 is a wasteful number, since it uses less digits than its factorization.

145551440442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329573.

The product of its (nonzero) digits is 256000, while the sum is 39.

Adding to 145551440442 its reverse (244044155541), we get a palindrome (389595595983).

The spelling of 145551440442 in words is "one hundred forty-five billion, five hundred fifty-one million, four hundred forty thousand, four hundred forty-two".