145535510405220 has 96 divisors (see below), whose sum is σ = 440681713436160. Its totient is φ = 35674233853440.

The previous prime is 145535510405179. The next prime is 145535510405399. The reversal of 145535510405220 is 22504015535541.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 390156651 + ... + 390529490.

It is an arithmetic number, because the mean of its divisors is an integer number (4590434514960).

Almost surely, 2^{145535510405220} is an apocalyptic number.

145535510405220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145535510405220 is an abundant number, since it is smaller than the sum of its proper divisors (295146203030940).

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

145535510405220 is a wasteful number, since it uses less digits than its factorization.

145535510405220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 780686405 (or 780686403 counting only the distinct ones).

The product of its (nonzero) digits is 600000, while the sum is 42.

The spelling of 145535510405220 in words is "one hundred forty-five trillion, five hundred thirty-five billion, five hundred ten million, four hundred five thousand, two hundred twenty".