145219756420 has 24 divisors (see below), whose sum is σ = 305003530944. Its totient is φ = 58079894496.

The previous prime is 145219756369. The next prime is 145219756447. The reversal of 145219756420 is 24657912541.

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 7 ways as a sum of consecutive naturals, for example, 350712 + ... + 642991.

It is an arithmetic number, because the mean of its divisors is an integer number (12708480456).

Almost surely, 2^145219756420 is an apocalyptic number.

145219756420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145219756420 is an abundant number, since it is smaller than the sum of its proper divisors (159783774524).

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

145219756420 is a wasteful number, since it uses less digits than its factorization.

145219756420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1001019 (or 1001017 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 46.

The spelling of 145219756420 in words is "one hundred forty-five billion, two hundred nineteen million, seven hundred fifty-six thousand, four hundred twenty".