145158968644 has 12 divisors (see below), whose sum is σ = 254030865424. Its totient is φ = 72578721384.

The previous prime is 145158968641. The next prime is 145158968701. The reversal of 145158968644 is 446869851541.

It is a super-2 number, since 2×145158968644² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145158968641) 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, 624859 + ... + 825085.

Almost surely, 2^145158968644 is an apocalyptic number.

It is an amenable number.

145158968644 is a deficient number, since it is larger than the sum of its proper divisors (108871896780).

145158968644 is a wasteful number, since it uses less digits than its factorization.

145158968644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381474 (or 381472 counting only the distinct ones).

The product of its digits is 33177600, while the sum is 61.

The spelling of 145158968644 in words is "one hundred forty-five billion, one hundred fifty-eight million, nine hundred sixty-eight thousand, six hundred forty-four".