421354660655 has 8 divisors (see below), whose sum is σ = 505635998832. Its totient is φ = 337076791168.

The previous prime is 421354660651. The next prime is 421354660723. The reversal of 421354660655 is 556066453124.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 421354660655 - 2² = 421354660651 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421354660651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 591989 + ... + 1092318.

It is an arithmetic number, because the mean of its divisors is an integer number (63204499854).

Almost surely, 2^421354660655 is an apocalyptic number.

421354660655 is a deficient number, since it is larger than the sum of its proper divisors (84281338177).

421354660655 is a wasteful number, since it uses less digits than its factorization.

421354660655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1734345.

The product of its (nonzero) digits is 2592000, while the sum is 47.

The spelling of 421354660655 in words is "four hundred twenty-one billion, three hundred fifty-four million, six hundred sixty thousand, six hundred fifty-five".