821534425414 has 8 divisors (see below), whose sum is σ = 1250694200088. Its totient is φ = 404636358720.

The previous prime is 821534425363. The next prime is 821534425441. The reversal of 821534425414 is 414524435128.

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

It is a super-2 number, since 2×821534425414² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3065426827 + ... + 3065427094.

It is an arithmetic number, because the mean of its divisors is an integer number (156336775011).

Almost surely, 2^821534425414 is an apocalyptic number.

821534425414 is a deficient number, since it is larger than the sum of its proper divisors (429159774674).

821534425414 is a wasteful number, since it uses less digits than its factorization.

821534425414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6130853990.

The product of its digits is 614400, while the sum is 43.

The spelling of 821534425414 in words is "eight hundred twenty-one billion, five hundred thirty-four million, four hundred twenty-five thousand, four hundred fourteen".