145889237504 has 20 divisors (see below), whose sum is σ = 291493536114. Its totient is φ = 72944618496.

The previous prime is 145889237497. The next prime is 145889237509. The reversal of 145889237504 is 405732988541.

It can be written as a sum of positive squares in only one way, i.e., 129312160000 + 16577077504 = 359600^2 + 128752^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 145889237504.

It is not an unprimeable number, because it can be changed into a prime (145889237509) 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 as a sum of consecutive naturals, namely, 142469447 + ... + 142470470.

Almost surely, 2^145889237504 is an apocalyptic number.

It is an amenable number.

145889237504 is a deficient number, since it is larger than the sum of its proper divisors (145604298610).

145889237504 is an frugal number, since it uses more digits than its factorization.

145889237504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284939935 (or 284939919 counting only the distinct ones).

The product of its (nonzero) digits is 9676800, while the sum is 56.

The spelling of 145889237504 in words is "one hundred forty-five billion, eight hundred eighty-nine million, two hundred thirty-seven thousand, five hundred four".