145516019855 has 16 divisors (see below), whose sum is σ = 181127828640. Its totient is φ = 112147918848.

The previous prime is 145516019843. The next prime is 145516019963. The reversal of 145516019855 is 558910615541.

It is not a de Polignac number, because 145516019855 - 2⁶ = 145516019791 is a prime.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 4620050 + ... + 4651439.

It is an arithmetic number, because the mean of its divisors is an integer number (11320489290).

Almost surely, 2^145516019855 is an apocalyptic number.

145516019855 is a deficient number, since it is larger than the sum of its proper divisors (35611808785).

145516019855 is an equidigital number, since it uses as much as digits as its factorization.

145516019855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9271610.

The product of its (nonzero) digits is 1080000, while the sum is 50.

The spelling of 145516019855 in words is "one hundred forty-five billion, five hundred sixteen million, nineteen thousand, eight hundred fifty-five".