20464256176 has 160 divisors (see below), whose sum is σ = 50772750336. Its totient is φ = 7772544000.

The previous prime is 20464256129. The next prime is 20464256177. The reversal of 20464256176 is 67165246402.

It is not an unprimeable number, because it can be changed into a prime (20464256177) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5911086 + ... + 5914546.

Almost surely, 2^20464256176 is an apocalyptic number.

20464256176 is a gapful number since it is divisible by the number (26) 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 20464256176, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25386375168).

20464256176 is an abundant number, since it is smaller than the sum of its proper divisors (30308494160).

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

20464256176 is a wasteful number, since it uses less digits than its factorization.

20464256176 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3651 (or 3645 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 43.

The spelling of 20464256176 in words is "twenty billion, four hundred sixty-four million, two hundred fifty-six thousand, one hundred seventy-six".