20435016620 has 48 divisors (see below), whose sum is σ = 43159468800. Its totient is φ = 8127241920.

The previous prime is 20435016587. The next prime is 20435016647. The reversal of 20435016620 is 2661053402.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6155321 + ... + 6158639.

It is an arithmetic number, because the mean of its divisors is an integer number (899155600).

Almost surely, 2^20435016620 is an apocalyptic number.

20435016620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20435016620 is an abundant number, since it is smaller than the sum of its proper divisors (22724452180).

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

20435016620 is a wasteful number, since it uses less digits than its factorization.

20435016620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4998 (or 4996 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The spelling of 20435016620 in words is "twenty billion, four hundred thirty-five million, sixteen thousand, six hundred twenty".