145164261663 has 6 divisors (see below), whose sum is σ = 209681711304. Its totient is φ = 96776174436.

The previous prime is 145164261647. The next prime is 145164261667. The reversal of 145164261663 is 366162461541.

145164261663 is a `hidden beast` number, since 14 + 5 + 16 + 4 + 2 + 616 + 6 + 3 = 666.

It is not a de Polignac number, because 145164261663 - 2⁴ = 145164261647 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145164261667) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8064681195 + ... + 8064681212.

It is an arithmetic number, because the mean of its divisors is an integer number (34946951884).

Almost surely, 2^145164261663 is an apocalyptic number.

145164261663 is a deficient number, since it is larger than the sum of its proper divisors (64517449641).

145164261663 is a wasteful number, since it uses less digits than its factorization.

145164261663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16129362413 (or 16129362410 counting only the distinct ones).

The product of its digits is 622080, while the sum is 45.

The spelling of 145164261663 in words is "one hundred forty-five billion, one hundred sixty-four million, two hundred sixty-one thousand, six hundred sixty-three".