2102444255340 has 144 divisors (see below), whose sum is σ = 7492346892576. Its totient is φ = 470477030400.

The previous prime is 2102444255297. The next prime is 2102444255341. The reversal of 2102444255340 is 435524442012.

2102444255340 is a `hidden beast` number, since 2 + 1 + 0 + 24 + 4 + 42 + 553 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 2102444255295 and 2102444255304.

It is not an unprimeable number, because it can be changed into a prime (2102444255341) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 40814281 + ... + 40865760.

It is an arithmetic number, because the mean of its divisors is an integer number (52030186754).

Almost surely, 2^{2102444255340} is an apocalyptic number.

2102444255340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2102444255340 is an abundant number, since it is smaller than the sum of its proper divisors (5389902637236).

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

2102444255340 is a wasteful number, since it uses less digits than its factorization.

2102444255340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81680080 (or 81680075 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 36.

Adding to 2102444255340 its reverse (435524442012), we get a palindrome (2537968697352).

The spelling of 2102444255340 in words is "two trillion, one hundred two billion, four hundred forty-four million, two hundred fifty-five thousand, three hundred forty".