421040155320151 has 4 divisors (see below), whose sum is σ = 421059282228792. Its totient is φ = 421021028411512.

The previous prime is 421040155320143. The next prime is 421040155320203. The reversal of 421040155320151 is 151023551040124.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 421040155320151 - 2³ = 421040155320143 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 (421040155326151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9563421301 + ... + 9563465326.

It is an arithmetic number, because the mean of its divisors is an integer number (105264820557198).

Almost surely, 2^{421040155320151} is an apocalyptic number.

421040155320151 is a deficient number, since it is larger than the sum of its proper divisors (19126908641).

421040155320151 is a wasteful number, since it uses less digits than its factorization.

421040155320151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19126908640.

The product of its (nonzero) digits is 24000, while the sum is 34.

The spelling of 421040155320151 in words is "four hundred twenty-one trillion, forty billion, one hundred fifty-five million, three hundred twenty thousand, one hundred fifty-one".