145550465515 has 16 divisors (see below), whose sum is σ = 214966842048. Its totient is φ = 92128646016.

The previous prime is 145550465497. The next prime is 145550465587. The reversal of 145550465515 is 515564055541.

It is a cyclic number.

It is not a de Polignac number, because 145550465515 - 2¹⁵ = 145550432747 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 159945112 + ... + 159946021.

It is an arithmetic number, because the mean of its divisors is an integer number (13435427628).

Almost surely, 2^145550465515 is an apocalyptic number.

145550465515 is a deficient number, since it is larger than the sum of its proper divisors (69416376533).

145550465515 is a wasteful number, since it uses less digits than its factorization.

145550465515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319891158.

The product of its (nonzero) digits is 1500000, while the sum is 46.

It can be divided in two parts, 145550 and 465515, that added together give a triangular number (611065 = T₁₁₀₅).

The spelling of 145550465515 in words is "one hundred forty-five billion, five hundred fifty million, four hundred sixty-five thousand, five hundred fifteen".