145222805040 has 160 divisors (see below), whose sum is σ = 455231904960. Its totient is φ = 38293143552.

The previous prime is 145222805033. The next prime is 145222805053. The reversal of 145222805040 is 40508222541.

It is a junction number, because it is equal to n+sod(n) for n = 145222804992 and 145222805010.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37455582 + ... + 37459458.

It is an arithmetic number, because the mean of its divisors is an integer number (2845199406).

Almost surely, 2^145222805040 is an apocalyptic number.

145222805040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 145222805040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (227615952480).

145222805040 is an abundant number, since it is smaller than the sum of its proper divisors (310009099920).

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

145222805040 is a wasteful number, since it uses less digits than its factorization.

145222805040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5599 (or 5593 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 33.

The spelling of 145222805040 in words is "one hundred forty-five billion, two hundred twenty-two million, eight hundred five thousand, forty".