421760740361 has 4 divisors (see below), whose sum is σ = 422249455872. Its totient is φ = 421272024852.

The previous prime is 421760740351. The next prime is 421760740369. The reversal of 421760740361 is 163047067124.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-421760740361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421760740369) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 244356461 + ... + 244358186.

It is an arithmetic number, because the mean of its divisors is an integer number (105562363968).

Almost surely, 2^421760740361 is an apocalyptic number.

It is an amenable number.

421760740361 is a deficient number, since it is larger than the sum of its proper divisors (488715511).

421760740361 is an equidigital number, since it uses as much as digits as its factorization.

421760740361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488715510.

The product of its (nonzero) digits is 169344, while the sum is 41.

The spelling of 421760740361 in words is "four hundred twenty-one billion, seven hundred sixty million, seven hundred forty thousand, three hundred sixty-one".