147723554221 has 16 divisors (see below), whose sum is σ = 155172910464. Its totient is φ = 140361183424.

The previous prime is 147723554203. The next prime is 147723554239. The reversal of 147723554221 is 122455327741.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (147723554203) and next prime (147723554239).

It is a cyclic number.

It is not a de Polignac number, because 147723554221 - 2²¹ = 147721457069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (147723554201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4707435 + ... + 4738711.

It is an arithmetic number, because the mean of its divisors is an integer number (9698306904).

Almost surely, 2^147723554221 is an apocalyptic number.

It is an amenable number.

147723554221 is a deficient number, since it is larger than the sum of its proper divisors (7449356243).

147723554221 is a wasteful number, since it uses less digits than its factorization.

147723554221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32660.

The product of its digits is 470400, while the sum is 43.

The spelling of 147723554221 in words is "one hundred forty-seven billion, seven hundred twenty-three million, five hundred fifty-four thousand, two hundred twenty-one".