145223531870 has 16 divisors (see below), whose sum is σ = 261454696560. Its totient is φ = 58077781824.

The previous prime is 145223531833. The next prime is 145223531897. The reversal of 145223531870 is 78135322541.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1401335 + ... + 1501394.

It is an arithmetic number, because the mean of its divisors is an integer number (16340918535).

Almost surely, 2^145223531870 is an apocalyptic number.

145223531870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145223531870 is a deficient number, since it is larger than the sum of its proper divisors (116231164690).

145223531870 is a wasteful number, since it uses less digits than its factorization.

145223531870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2907739.

The product of its (nonzero) digits is 201600, while the sum is 41.

The spelling of 145223531870 in words is "one hundred forty-five billion, two hundred twenty-three million, five hundred thirty-one thousand, eight hundred seventy".