4021356423408 has 40 divisors (see below), whose sum is σ = 10388815001856. Its totient is φ = 1340412024000.

The previous prime is 4021356423407. The next prime is 4021356423431. The reversal of 4021356423408 is 8043246531204.

It is a self number, because there is not a number n which added to its sum of digits gives 4021356423408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4021356423401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 389083 + ... + 2862533.

Almost surely, 2^{4021356423408} is an apocalyptic number.

4021356423408 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

4021356423408 is an abundant number, since it is smaller than the sum of its proper divisors (6367458578448).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4021356423408 is a wasteful number, since it uses less digits than its factorization.

4021356423408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2507333 (or 2507327 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 42.

The spelling of 4021356423408 in words is "four trillion, twenty-one billion, three hundred fifty-six million, four hundred twenty-three thousand, four hundred eight".