145479650489 has 4 divisors (see below), whose sum is σ = 147650988624. Its totient is φ = 143308312356.

The previous prime is 145479650447. The next prime is 145479650497. The reversal of 145479650489 is 984056974541.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 984056974541 = 83 ⋅11856108127.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145479650489 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (145479650089) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1085668967 + ... + 1085669100.

It is an arithmetic number, because the mean of its divisors is an integer number (36912747156).

Almost surely, 2^145479650489 is an apocalyptic number.

It is an amenable number.

145479650489 is a deficient number, since it is larger than the sum of its proper divisors (2171338135).

145479650489 is an equidigital number, since it uses as much as digits as its factorization.

145479650489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2171338134.

The product of its (nonzero) digits is 43545600, while the sum is 62.

The spelling of 145479650489 in words is "one hundred forty-five billion, four hundred seventy-nine million, six hundred fifty thousand, four hundred eighty-nine".