145271881667 has 8 divisors (see below), whose sum is σ = 158542529520. Its totient is φ = 132011919360.

The previous prime is 145271881609. The next prime is 145271881673. The reversal of 145271881667 is 766188172541.

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 145271881667 - 2³² = 140976914371 is a prime.

It is a super-3 number, since 3×145271881667³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145271181667) 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, 2642942 + ... + 2697347.

It is an arithmetic number, because the mean of its divisors is an integer number (19817816190).

Almost surely, 2^145271881667 is an apocalyptic number.

145271881667 is a deficient number, since it is larger than the sum of its proper divisors (13270647853).

145271881667 is a wasteful number, since it uses less digits than its factorization.

145271881667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5342773.

The product of its digits is 4515840, while the sum is 56.

The spelling of 145271881667 in words is "one hundred forty-five billion, two hundred seventy-one million, eight hundred eighty-one thousand, six hundred sixty-seven".