145040504521 has 8 divisors (see below), whose sum is σ = 162085176288. Its totient is φ = 128639028000.

The previous prime is 145040504509. The next prime is 145040504537. The reversal of 145040504521 is 125405040541.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 145040504521 - 2³⁵ = 110680766153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145040504221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 160798335 + ... + 160799236.

It is an arithmetic number, because the mean of its divisors is an integer number (20260647036).

Almost surely, 2^145040504521 is an apocalyptic number.

145040504521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

145040504521 is a deficient number, since it is larger than the sum of its proper divisors (17044671767).

145040504521 is a wasteful number, since it uses less digits than its factorization.

145040504521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321597623.

The product of its (nonzero) digits is 16000, while the sum is 31.

The spelling of 145040504521 in words is "one hundred forty-five billion, forty million, five hundred four thousand, five hundred twenty-one".