20576466381 has 32 divisors (see below), whose sum is σ = 28728347776. Its totient is φ = 13087008000.

The previous prime is 20576466373. The next prime is 20576466397. The reversal of 20576466381 is 18366467502.

It is not a de Polignac number, because 20576466381 - 2³ = 20576466373 is a prime.

It is a super-2 number, since 2×20576466381² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20576466381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20576466301) 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, 2236611 + ... + 2245791.

It is an arithmetic number, because the mean of its divisors is an integer number (897760868).

Almost surely, 2^20576466381 is an apocalyptic number.

It is an amenable number.

20576466381 is a deficient number, since it is larger than the sum of its proper divisors (8151881395).

20576466381 is a wasteful number, since it uses less digits than its factorization.

20576466381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9613.

The product of its (nonzero) digits is 1451520, while the sum is 48.

The spelling of 20576466381 in words is "twenty billion, five hundred seventy-six million, four hundred sixty-six thousand, three hundred eighty-one".