421231688695 has 16 divisors (see below), whose sum is σ = 519452144640. Its totient is φ = 327680239104.

The previous prime is 421231688639. The next prime is 421231688699. The reversal of 421231688695 is 596886132124.

It is a cyclic number.

It is not a de Polignac number, because 421231688695 - 2¹³ = 421231680503 is a prime.

It is a super-2 number, since 2×421231688695² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421231688699) 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, 376930 + ... + 992239.

It is an arithmetic number, because the mean of its divisors is an integer number (32465759040).

Almost surely, 2^421231688695 is an apocalyptic number.

421231688695 is a deficient number, since it is larger than the sum of its proper divisors (98220455945).

421231688695 is a wasteful number, since it uses less digits than its factorization.

421231688695 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1370874.

The product of its digits is 4976640, while the sum is 55.

The spelling of 421231688695 in words is "four hundred twenty-one billion, two hundred thirty-one million, six hundred eighty-eight thousand, six hundred ninety-five".