2105390747380 has 12 divisors (see below), whose sum is σ = 4421320569540. Its totient is φ = 842156298944.

The previous prime is 2105390747371. The next prime is 2105390747459. The reversal of 2105390747380 is 837470935012.

It can be written as a sum of positive squares in 2 ways, for example, as 787936724964 + 1317454022416 = 887658^2 + 1147804^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52634768665 + ... + 52634768704.

It is an arithmetic number, because the mean of its divisors is an integer number (368443380795).

Almost surely, 2^{2105390747380} is an apocalyptic number.

2105390747380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2105390747380 is an abundant number, since it is smaller than the sum of its proper divisors (2315929822160).

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

2105390747380 is a wasteful number, since it uses less digits than its factorization.

2105390747380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105269537378 (or 105269537376 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 49.

The spelling of 2105390747380 in words is "two trillion, one hundred five billion, three hundred ninety million, seven hundred forty-seven thousand, three hundred eighty".