145885821670 has 16 divisors (see below), whose sum is σ = 263037313440. Its totient is φ = 58255921024.

The previous prime is 145885821647. The next prime is 145885821673. The reversal of 145885821670 is 76128588541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145885821673) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12294730 + ... + 12306589.

It is an arithmetic number, because the mean of its divisors is an integer number (16439832090).

Almost surely, 2^145885821670 is an apocalyptic number.

145885821670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145885821670 is a deficient number, since it is larger than the sum of its proper divisors (117151491770).

145885821670 is a wasteful number, since it uses less digits than its factorization.

145885821670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24601919.

The product of its (nonzero) digits is 4300800, while the sum is 55.

The spelling of 145885821670 in words is "one hundred forty-five billion, eight hundred eighty-five million, eight hundred twenty-one thousand, six hundred seventy".