421387680463 has 16 divisors (see below), whose sum is σ = 436505462784. Its totient is φ = 406528657920.

The previous prime is 421387680433. The next prime is 421387680479. The reversal of 421387680463 is 364086783124.

It is a cyclic number.

It is not a de Polignac number, because 421387680463 - 2¹⁷ = 421387549391 is a prime.

It is a super-3 number, since 3×421387680463³ (a number of 36 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 421387680463.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421387680433) 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, 21136606 + ... + 21156532.

It is an arithmetic number, because the mean of its divisors is an integer number (27281591424).

Almost surely, 2^421387680463 is an apocalyptic number.

421387680463 is a deficient number, since it is larger than the sum of its proper divisors (15117782321).

421387680463 is a wasteful number, since it uses less digits than its factorization.

421387680463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26382.

The product of its (nonzero) digits is 4644864, while the sum is 52.

The spelling of 421387680463 in words is "four hundred twenty-one billion, three hundred eighty-seven million, six hundred eighty thousand, four hundred sixty-three".