145413421989 has 64 divisors (see below), whose sum is σ = 220778127360. Its totient is φ = 84355200000.

The previous prime is 145413421987. The next prime is 145413422009. The reversal of 145413421989 is 989124314541.

It is not a de Polignac number, because 145413421989 - 2¹ = 145413421987 is a prime.

It is a super-2 number, since 2×145413421989² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145413421987) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 48453489 + ... + 48456489.

It is an arithmetic number, because the mean of its divisors is an integer number (3449658240).

Almost surely, 2^145413421989 is an apocalyptic number.

It is an amenable number.

145413421989 is a deficient number, since it is larger than the sum of its proper divisors (75364705371).

145413421989 is a wasteful number, since it uses less digits than its factorization.

145413421989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3722.

The product of its digits is 1244160, while the sum is 51.

The spelling of 145413421989 in words is "one hundred forty-five billion, four hundred thirteen million, four hundred twenty-one thousand, nine hundred eighty-nine".