20014220440 has 32 divisors (see below), whose sum is σ = 45073370160. Its totient is φ = 7998332800.

The previous prime is 20014220417. The next prime is 20014220461. The reversal of 20014220440 is 4402241002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 185671 + ... + 272950.

Almost surely, 2^20014220440 is an apocalyptic number.

20014220440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20014220440 is an abundant number, since it is smaller than the sum of its proper divisors (25059149720).

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

20014220440 is a wasteful number, since it uses less digits than its factorization.

20014220440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459723 (or 459719 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

Adding to 20014220440 its reverse (4402241002), we get a palindrome (24416461442).

The spelling of 20014220440 in words is "twenty billion, fourteen million, two hundred twenty thousand, four hundred forty".