145889336649 has 32 divisors (see below), whose sum is σ = 234666720000. Its totient is φ = 80490652032.

The previous prime is 145889336587. The next prime is 145889336687. The reversal of 145889336649 is 946633988541.

It is not a de Polignac number, because 145889336649 - 2¹⁵ = 145889303881 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 145889336649.

It is not an unprimeable number, because it can be changed into a prime (145889336689) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2414604 + ... + 2474285.

It is an arithmetic number, because the mean of its divisors is an integer number (7333335000).

Almost surely, 2^145889336649 is an apocalyptic number.

It is an amenable number.

145889336649 is a deficient number, since it is larger than the sum of its proper divisors (88777383351).

145889336649 is an equidigital number, since it uses as much as digits as its factorization.

145889336649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4888942 (or 4888928 counting only the distinct ones).

The product of its digits is 134369280, while the sum is 66.

The spelling of 145889336649 in words is "one hundred forty-five billion, eight hundred eighty-nine million, three hundred thirty-six thousand, six hundred forty-nine".