20356435712 has 36 divisors (see below), whose sum is σ = 41624432976. Its totient is φ = 9929963520.

The previous prime is 20356435703. The next prime is 20356435739. The reversal of 20356435712 is 21753465302.

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, 959228 + ... + 980219.

Almost surely, 2^20356435712 is an apocalyptic number.

It is an amenable number.

20356435712 is an abundant number, since it is smaller than the sum of its proper divisors (21267997264).

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

20356435712 is an equidigital number, since it uses as much as digits as its factorization.

20356435712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1939504 (or 1939490 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 38.

The spelling of 20356435712 in words is "twenty billion, three hundred fifty-six million, four hundred thirty-five thousand, seven hundred twelve".