20435061612 has 48 divisors (see below), whose sum is σ = 54502640640. Its totient is φ = 5837609472.

The previous prime is 20435061611. The next prime is 20435061637. The reversal of 20435061612 is 21616053402.

It is a self number, because there is not a number n which added to its sum of digits gives 20435061612.

It is not an unprimeable number, because it can be changed into a prime (20435061611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 591964 + ... + 625532.

It is an arithmetic number, because the mean of its divisors is an integer number (1135471680).

Almost surely, 2^20435061612 is an apocalyptic number.

It is an amenable number.

20435061612 is an abundant number, since it is smaller than the sum of its proper divisors (34067579028).

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

20435061612 is a wasteful number, since it uses less digits than its factorization.

20435061612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40830 (or 40828 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The spelling of 20435061612 in words is "twenty billion, four hundred thirty-five million, sixty-one thousand, six hundred twelve".