20146821402140 has 12 divisors (see below), whose sum is σ = 42308324944536. Its totient is φ = 8058728560848.

The previous prime is 20146821402133. The next prime is 20146821402167. The reversal of 20146821402140 is 4120412864102.

It is a self number, because there is not a number n which added to its sum of digits gives 20146821402140.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 503670535034 + ... + 503670535073.

It is an arithmetic number, because the mean of its divisors is an integer number (3525693745378).

Almost surely, 2^{20146821402140} is an apocalyptic number.

20146821402140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20146821402140 is an abundant number, since it is smaller than the sum of its proper divisors (22161503542396).

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

20146821402140 is a wasteful number, since it uses less digits than its factorization.

20146821402140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1007341070116 (or 1007341070114 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 35.

The spelling of 20146821402140 in words is "twenty trillion, one hundred forty-six billion, eight hundred twenty-one million, four hundred two thousand, one hundred forty".