145485648021 has 16 divisors (see below), whose sum is σ = 221700253824. Its totient is φ = 83131716864.

The previous prime is 145485647963. The next prime is 145485648037. The reversal of 145485648021 is 120846584541.

It is not a de Polignac number, because 145485648021 - 2⁹ = 145485647509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145485648041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 579145 + ... + 791441.

It is an arithmetic number, because the mean of its divisors is an integer number (13856265864).

Almost surely, 2^145485648021 is an apocalyptic number.

It is an amenable number.

145485648021 is a deficient number, since it is larger than the sum of its proper divisors (76214605803).

145485648021 is a wasteful number, since it uses less digits than its factorization.

145485648021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244940.

The product of its (nonzero) digits is 1228800, while the sum is 48.

The spelling of 145485648021 in words is "one hundred forty-five billion, four hundred eighty-five million, six hundred forty-eight thousand, twenty-one".