145829721670 has 64 divisors (see below), whose sum is σ = 276531720192. Its totient is φ = 55299024000.

The previous prime is 145829721643. The next prime is 145829721677. The reversal of 145829721670 is 76127928541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145829721677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3739975 + ... + 3778765.

It is an arithmetic number, because the mean of its divisors is an integer number (4320808128).

Almost surely, 2^145829721670 is an apocalyptic number.

145829721670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145829721670 is a deficient number, since it is larger than the sum of its proper divisors (130701998522).

145829721670 is a wasteful number, since it uses less digits than its factorization.

145829721670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39077.

The product of its (nonzero) digits is 1693440, while the sum is 52.

The spelling of 145829721670 in words is "one hundred forty-five billion, eight hundred twenty-nine million, seven hundred twenty-one thousand, six hundred seventy".