145921047686 has 8 divisors (see below), whose sum is σ = 218906910480. Its totient is φ = 72952077528.

The previous prime is 145921047661. The next prime is 145921047709. The reversal of 145921047686 is 686740129541.

It is a happy number.

145921047686 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4201541 + ... + 4236128.

It is an arithmetic number, because the mean of its divisors is an integer number (27363363810).

Almost surely, 2^145921047686 is an apocalyptic number.

145921047686 is a deficient number, since it is larger than the sum of its proper divisors (72985862794).

145921047686 is an equidigital number, since it uses as much as digits as its factorization.

145921047686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8446318.

The product of its (nonzero) digits is 2903040, while the sum is 53.

The spelling of 145921047686 in words is "one hundred forty-five billion, nine hundred twenty-one million, forty-seven thousand, six hundred eighty-six".