20681102460 has 48 divisors (see below), whose sum is σ = 57913452576. Its totient is φ = 5514354432.

The previous prime is 20681102437. The next prime is 20681102467. The reversal of 20681102460 is 6420118602.

It is a super-2 number, since 2×20681102460² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20681102467) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 899022 + ... + 921738.

It is an arithmetic number, because the mean of its divisors is an integer number (1206530262).

Almost surely, 2^20681102460 is an apocalyptic number.

20681102460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20681102460 is an abundant number, since it is smaller than the sum of its proper divisors (37232350116).

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

20681102460 is a wasteful number, since it uses less digits than its factorization.

20681102460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37902 (or 37900 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The spelling of 20681102460 in words is "twenty billion, six hundred eighty-one million, one hundred two thousand, four hundred sixty".