4221415723187 has 8 divisors (see below), whose sum is σ = 4546180787904. Its totient is φ = 3896656483968.

The previous prime is 4221415723123. The next prime is 4221415723241. The reversal of 4221415723187 is 7813275141224.

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 4221415723187 - 2⁶ = 4221415723123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4221415723687) 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, 111158 + ... + 2907780.

It is an arithmetic number, because the mean of its divisors is an integer number (568272598488).

Almost surely, 2^{4221415723187} is an apocalyptic number.

4221415723187 is a deficient number, since it is larger than the sum of its proper divisors (324765064717).

4221415723187 is a wasteful number, since it uses less digits than its factorization.

4221415723187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2912749.

The product of its digits is 752640, while the sum is 47.

The spelling of 4221415723187 in words is "four trillion, two hundred twenty-one billion, four hundred fifteen million, seven hundred twenty-three thousand, one hundred eighty-seven".