421629704161 has 16 divisors (see below), whose sum is σ = 440547787008. Its totient is φ = 403139900800.

The previous prime is 421629704149. The next prime is 421629704179. The reversal of 421629704161 is 161407926124.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-421629704161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421629701161) 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, 1873110 + ... + 2086096.

It is an arithmetic number, because the mean of its divisors is an integer number (27534236688).

Almost surely, 2^421629704161 is an apocalyptic number.

421629704161 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

421629704161 is a deficient number, since it is larger than the sum of its proper divisors (18918082847).

421629704161 is a wasteful number, since it uses less digits than its factorization.

421629704161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213992.

The product of its (nonzero) digits is 145152, while the sum is 43.

The spelling of 421629704161 in words is "four hundred twenty-one billion, six hundred twenty-nine million, seven hundred four thousand, one hundred sixty-one".