145145220522 has 32 divisors (see below), whose sum is σ = 292480943040. Its totient is φ = 48017639040.

The previous prime is 145145220469. The next prime is 145145220529. The reversal of 145145220522 is 225022541541.

It is not an unprimeable number, because it can be changed into a prime (145145220529) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 470254 + ... + 715142.

It is an arithmetic number, because the mean of its divisors is an integer number (9140029470).

Almost surely, 2^145145220522 is an apocalyptic number.

145145220522 is an abundant number, since it is smaller than the sum of its proper divisors (147335722518).

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

145145220522 is a wasteful number, since it uses less digits than its factorization.

145145220522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245638.

The product of its (nonzero) digits is 32000, while the sum is 33.

The spelling of 145145220522 in words is "one hundred forty-five billion, one hundred forty-five million, two hundred twenty thousand, five hundred twenty-two".