145661407170 has 64 divisors (see below), whose sum is σ = 361807478784. Its totient is φ = 37491802560.

The previous prime is 145661407153. The next prime is 145661407183. The reversal of 145661407170 is 71704166541.

It is a happy number.

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, 151719 + ... + 560661.

It is an arithmetic number, because the mean of its divisors is an integer number (5653241856).

Almost surely, 2^145661407170 is an apocalyptic number.

145661407170 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 145661407170, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (180903739392).

145661407170 is an abundant number, since it is smaller than the sum of its proper divisors (216146071614).

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

145661407170 is a wasteful number, since it uses less digits than its factorization.

145661407170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409367.

The product of its (nonzero) digits is 141120, while the sum is 42.

The spelling of 145661407170 in words is "one hundred forty-five billion, six hundred sixty-one million, four hundred seven thousand, one hundred seventy".