145164161505 has 64 divisors (see below), whose sum is σ = 263213991936. Its totient is φ = 67698624000.

The previous prime is 145164161477. The next prime is 145164161521. The reversal of 145164161505 is 505161461541.

It is not a de Polignac number, because 145164161505 - 2¹⁰ = 145164160481 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 329202 + ... + 631428.

It is an arithmetic number, because the mean of its divisors is an integer number (4112718624).

Almost surely, 2^145164161505 is an apocalyptic number.

145164161505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

145164161505 is a deficient number, since it is larger than the sum of its proper divisors (118049830431).

145164161505 is a wasteful number, since it uses less digits than its factorization.

145164161505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302358.

The product of its (nonzero) digits is 72000, while the sum is 39.

The spelling of 145164161505 in words is "one hundred forty-five billion, one hundred sixty-four million, one hundred sixty-one thousand, five hundred five".