145170771870 has 64 divisors (see below), whose sum is σ = 363612395520. Its totient is φ = 37023537408.

The previous prime is 145170771857. The next prime is 145170771887. The reversal of 145170771870 is 78177071541.

It is a congruent 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, 6667642 + ... + 6689378.

It is an arithmetic number, because the mean of its divisors is an integer number (5681443680).

Almost surely, 2^145170771870 is an apocalyptic number.

145170771870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145170771870 is an abundant number, since it is smaller than the sum of its proper divisors (218441623650).

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

145170771870 is a wasteful number, since it uses less digits than its factorization.

145170771870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31449.

The product of its (nonzero) digits is 384160, while the sum is 48.

The spelling of 145170771870 in words is "one hundred forty-five billion, one hundred seventy million, seven hundred seventy-one thousand, eight hundred seventy".