146221727651 has 8 divisors (see below), whose sum is σ = 146584468800. Its totient is φ = 145859184640.

The previous prime is 146221727611. The next prime is 146221727761. The reversal of 146221727651 is 156727122641.

It is a happy number.

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 146221727651 - 2²⁶ = 146154618787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (146221727611) 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, 1487030 + ... + 1582308.

It is an arithmetic number, because the mean of its divisors is an integer number (18323058600).

Almost surely, 2^146221727651 is an apocalyptic number.

146221727651 is a deficient number, since it is larger than the sum of its proper divisors (362741149).

146221727651 is an equidigital number, since it uses as much as digits as its factorization.

146221727651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99069.

The product of its digits is 282240, while the sum is 44.

The spelling of 146221727651 in words is "one hundred forty-six billion, two hundred twenty-one million, seven hundred twenty-seven thousand, six hundred fifty-one".