145515019392 has 72 divisors (see below), whose sum is σ = 418771886715. Its totient is φ = 48500690688.

The previous prime is 145515019369. The next prime is 145515019451. The reversal of 145515019392 is 293910515541.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

145515019392 is a `hidden beast` number, since 1 + 4 + 5 + 51 + 501 + 9 + 3 + 92 = 666.

145515019392 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 72757509696 + 72757509696 = 269736^2 + 269736^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=269736.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 12941709 + ... + 12952947.

Almost surely, 2^145515019392 is an apocalyptic number.

145515019392 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

145515019392 is an abundant number, since it is smaller than the sum of its proper divisors (273256867323).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145515019392 is an frugal number, since it uses more digits than its factorization.

145515019392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22498 (or 11244 counting only the distinct ones).

The product of its (nonzero) digits is 243000, while the sum is 45.

The spelling of 145515019392 in words is "one hundred forty-five billion, five hundred fifteen million, nineteen thousand, three hundred ninety-two".