20163465756 has 120 divisors (see below), whose sum is σ = 60283198976. Its totient is φ = 5757000480.

The previous prime is 20163465737. The next prime is 20163465761. The reversal of 20163465756 is 65756436102.

20163465756 is a `hidden beast` number, since 2 + 0 + 1 + 634 + 6 + 5 + 7 + 5 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 5239425 + ... + 5243271.

Almost surely, 2^20163465756 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 20163465756, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30141599488).

20163465756 is an abundant number, since it is smaller than the sum of its proper divisors (40119733220).

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

20163465756 is a wasteful number, since it uses less digits than its factorization.

20163465756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6181 (or 6170 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 45.

The spelling of 20163465756 in words is "twenty billion, one hundred sixty-three million, four hundred sixty-five thousand, seven hundred fifty-six".