145481521964 has 12 divisors (see below), whose sum is σ = 260802240888. Its totient is φ = 70966596000.

The previous prime is 145481521931. The next prime is 145481521967. The reversal of 145481521964 is 469125184541.

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (145481521967) 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, 443541062 + ... + 443541389.

It is an arithmetic number, because the mean of its divisors is an integer number (21733520074).

Almost surely, 2^145481521964 is an apocalyptic number.

It is an amenable number.

145481521964 is a deficient number, since it is larger than the sum of its proper divisors (115320718924).

145481521964 is a wasteful number, since it uses less digits than its factorization.

145481521964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 887082496 (or 887082494 counting only the distinct ones).

The product of its digits is 1382400, while the sum is 50.

The spelling of 145481521964 in words is "one hundred forty-five billion, four hundred eighty-one million, five hundred twenty-one thousand, nine hundred sixty-four".