145206563515 has 12 divisors (see below), whose sum is σ = 188682612624. Its totient is φ = 107229461664.

The previous prime is 145206563461. The next prime is 145206563533. The reversal of 145206563515 is 515365602541.

It is a happy number.

It is not a de Polignac number, because 145206563515 - 2¹³ = 145206555323 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 85920199 + ... + 85921888.

It is an arithmetic number, because the mean of its divisors is an integer number (15723551052).

Almost surely, 2^145206563515 is an apocalyptic number.

145206563515 is a deficient number, since it is larger than the sum of its proper divisors (43476049109).

145206563515 is a wasteful number, since it uses less digits than its factorization.

145206563515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171842118 (or 171842105 counting only the distinct ones).

The product of its (nonzero) digits is 540000, while the sum is 43.

The spelling of 145206563515 in words is "one hundred forty-five billion, two hundred six million, five hundred sixty-three thousand, five hundred fifteen".