421753170116 has 24 divisors (see below), whose sum is σ = 745312661184. Its totient is φ = 208807129440.

The previous prime is 421753170089. The next prime is 421753170121. The reversal of 421753170116 is 611071357124.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 421753170116.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4257671 + ... + 4355601.

It is an arithmetic number, because the mean of its divisors is an integer number (31054694216).

Almost surely, 2^421753170116 is an apocalyptic number.

It is an amenable number.

421753170116 is a deficient number, since it is larger than the sum of its proper divisors (323559491068).

421753170116 is a wasteful number, since it uses less digits than its factorization.

421753170116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108491 (or 108489 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 38.

The spelling of 421753170116 in words is "four hundred twenty-one billion, seven hundred fifty-three million, one hundred seventy thousand, one hundred sixteen".