20035434040 has 16 divisors (see below), whose sum is σ = 45079726680. Its totient is φ = 8014173600.

The previous prime is 20035434019. The next prime is 20035434059. The reversal of 20035434040 is 4043453002.

It is a junction number, because it is equal to n+sod(n) for n = 20035433996 and 20035434014.

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, 250442886 + ... + 250442965.

Almost surely, 2^20035434040 is an apocalyptic number.

20035434040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20035434040 is an abundant number, since it is smaller than the sum of its proper divisors (25044292640).

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

20035434040 is a wasteful number, since it uses less digits than its factorization.

20035434040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500885862 (or 500885858 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 25.

Adding to 20035434040 its reverse (4043453002), we get a palindrome (24078887042).

The spelling of 20035434040 in words is "twenty billion, thirty-five million, four hundred thirty-four thousand, forty".