145723541550 has 48 divisors (see below), whose sum is σ = 361438711680. Its totient is φ = 38854844640.

The previous prime is 145723541549. The next prime is 145723541563. The reversal of 145723541550 is 55145327541.

145723541550 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1265271 + ... + 1375629.

It is an arithmetic number, because the mean of its divisors is an integer number (7529973160).

Almost surely, 2^145723541550 is an apocalyptic number.

145723541550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145723541550 is an abundant number, since it is smaller than the sum of its proper divisors (215715170130).

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

145723541550 is a wasteful number, since it uses less digits than its factorization.

145723541550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119177 (or 119172 counting only the distinct ones).

The product of its (nonzero) digits is 420000, while the sum is 42.

The spelling of 145723541550 in words is "one hundred forty-five billion, seven hundred twenty-three million, five hundred forty-one thousand, five hundred fifty".