421216141023555 has 48 divisors (see below), whose sum is σ = 692980492379616. Its totient is φ = 218459422504960.

The previous prime is 421216141023541. The next prime is 421216141023581. The reversal of 421216141023555 is 555320141612124.

It is not a de Polignac number, because 421216141023555 - 2⁷ = 421216141023427 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 39472476 + ... + 48994985.

It is an arithmetic number, because the mean of its divisors is an integer number (14437093591242).

Almost surely, 2^{421216141023555} is an apocalyptic number.

421216141023555 is a deficient number, since it is larger than the sum of its proper divisors (271764351356061).

421216141023555 is a wasteful number, since it uses less digits than its factorization.

421216141023555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88467688 (or 88467635 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 42.

Adding to 421216141023555 its reverse (555320141612124), we get a palindrome (976536282635679).

The spelling of 421216141023555 in words is "four hundred twenty-one trillion, two hundred sixteen billion, one hundred forty-one million, twenty-three thousand, five hundred fifty-five".