20435063620 has 12 divisors (see below), whose sum is σ = 42913633644. Its totient is φ = 8174025440.

The previous prime is 20435063617. The next prime is 20435063633. The reversal of 20435063620 is 2636053402.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 5712638724 + 14722424896 = 75582^2 + 121336^2 .

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, 510876571 + ... + 510876610.

It is an arithmetic number, because the mean of its divisors is an integer number (3576136137).

Almost surely, 2^20435063620 is an apocalyptic number.

20435063620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20435063620 is an abundant number, since it is smaller than the sum of its proper divisors (22478570024).

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

20435063620 is a wasteful number, since it uses less digits than its factorization.

20435063620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1021753190 (or 1021753188 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 31.

The spelling of 20435063620 in words is "twenty billion, four hundred thirty-five million, sixty-three thousand, six hundred twenty".