20202112031440 has 40 divisors (see below), whose sum is σ = 46970405799840. Its totient is φ = 8080759595136.

The previous prime is 20202112031399. The next prime is 20202112031473. The reversal of 20202112031440 is 4413021120202.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6595071 + ... + 9159649.

It is an arithmetic number, because the mean of its divisors is an integer number (1174260144996).

Almost surely, 2^{20202112031440} is an apocalyptic number.

20202112031440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20202112031440 is an abundant number, since it is smaller than the sum of its proper divisors (26768293768400).

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

20202112031440 is a wasteful number, since it uses less digits than its factorization.

20202112031440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2663059 (or 2663053 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 20202112031440 its reverse (4413021120202), we get a palindrome (24615133151642).

The spelling of 20202112031440 in words is "twenty trillion, two hundred two billion, one hundred twelve million, thirty-one thousand, four hundred forty".