421917751083 has 6 divisors (see below), whose sum is σ = 562558501524. Its totient is φ = 281277750684.

The previous prime is 421917751007. The next prime is 421917751093. The reversal of 421917751083 is 380157719124.

It is not a de Polignac number, because 421917751083 - 2¹⁴ = 421917734699 is a prime.

It is not an unprimeable number, because it can be changed into a prime (421917751093) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 937548 + ... + 1312566.

It is an arithmetic number, because the mean of its divisors is an integer number (93759750254).

Almost surely, 2^421917751083 is an apocalyptic number.

421917751083 is a deficient number, since it is larger than the sum of its proper divisors (140640750441).

421917751083 is an frugal number, since it uses more digits than its factorization.

421917751083 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 750041 (or 375022 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 48.

Multiplying 421917751083 by its sum of digits (48), we get a square (20252052051984 = 4500228²).

The spelling of 421917751083 in words is "four hundred twenty-one billion, nine hundred seventeen million, seven hundred fifty-one thousand, eighty-three".