20356047360 has 640 divisors, whose sum is σ = 80927320320. Its totient is φ = 4807065600.

The previous prime is 20356047329. The next prime is 20356047419. The reversal of 20356047360 is 6374065302.

20356047360 is a `hidden beast` number, since 20 + 3 + 560 + 4 + 73 + 6 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (640).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 31172794 + ... + 31173446.

It is an arithmetic number, because the mean of its divisors is an integer number (126448938).

Almost surely, 2^20356047360 is an apocalyptic number.

20356047360 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20356047360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40463660160).

20356047360 is an abundant number, since it is smaller than the sum of its proper divisors (60571272960).

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

20356047360 is a wasteful number, since it uses less digits than its factorization.

20356047360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 737 (or 715 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 36.

The spelling of 20356047360 in words is "twenty billion, three hundred fifty-six million, forty-seven thousand, three hundred sixty".