20723681461000 has 128 divisors (see below), whose sum is σ = 55669574338560. Its totient is φ = 7073399520000.

The previous prime is 20723681460953. The next prime is 20723681461001. The reversal of 20723681461000 is 16418632702.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (20723681461001) 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, 5076951 + ... + 8198950.

It is an arithmetic number, because the mean of its divisors is an integer number (434918549520).

Almost surely, 2^{20723681461000} is an apocalyptic number.

20723681461000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20723681461000 is an abundant number, since it is smaller than the sum of its proper divisors (34945892877560).

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

20723681461000 is a wasteful number, since it uses less digits than its factorization.

20723681461000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13276152 (or 13276138 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 40.

The spelling of 20723681461000 in words is "twenty trillion, seven hundred twenty-three billion, six hundred eighty-one million, four hundred sixty-one thousand".