20214403031640 has 32 divisors (see below), whose sum is σ = 60643209095280. Its totient is φ = 5390507475072.

The previous prime is 20214403031623. The next prime is 20214403031651. The reversal of 20214403031640 is 4613030441202.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 20214403031598 and 20214403031607.

It is a congruent number.

It is an unprimeable number.

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, 84226679179 + ... + 84226679418.

Almost surely, 2^{20214403031640} is an apocalyptic number.

20214403031640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20214403031640 is an abundant number, since it is smaller than the sum of its proper divisors (40428806063640).

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

20214403031640 is a wasteful number, since it uses less digits than its factorization.

20214403031640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168453358611 (or 168453358607 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

Adding to 20214403031640 its reverse (4613030441202), we get a palindrome (24827433472842).

The spelling of 20214403031640 in words is "twenty trillion, two hundred fourteen billion, four hundred three million, thirty-one thousand, six hundred forty".