145364015521 has 16 divisors (see below), whose sum is σ = 159348579840. Its totient is φ = 132091464960.

The previous prime is 145364015509. The next prime is 145364015551. The reversal of 145364015521 is 125510463541.

145364015521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 145364015521 - 2²¹ = 145361918369 is a prime.

It is a super-2 number, since 2×145364015521² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145364015551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1025470 + ... + 1158583.

It is an arithmetic number, because the mean of its divisors is an integer number (9959286240).

Almost surely, 2^145364015521 is an apocalyptic number.

It is an amenable number.

145364015521 is a deficient number, since it is larger than the sum of its proper divisors (13984564319).

145364015521 is a wasteful number, since it uses less digits than its factorization.

145364015521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2184216.

The product of its (nonzero) digits is 72000, while the sum is 37.

The spelling of 145364015521 in words is "one hundred forty-five billion, three hundred sixty-four million, fifteen thousand, five hundred twenty-one".