20356370624 has 56 divisors (see below), whose sum is σ = 41743902288. Its totient is φ = 9842918400.

The previous prime is 20356370603. The next prime is 20356370647. The reversal of 20356370624 is 42607365302.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 241334 + ... + 314570.

Almost surely, 2^20356370624 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20356370624, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20871951144).

20356370624 is an abundant number, since it is smaller than the sum of its proper divisors (21387531664).

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

20356370624 is a wasteful number, since it uses less digits than its factorization.

20356370624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73393 (or 73383 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 38.

The spelling of 20356370624 in words is "twenty billion, three hundred fifty-six million, three hundred seventy thousand, six hundred twenty-four".