2100657974280 has 32 divisors (see below), whose sum is σ = 6301973923200. Its totient is φ = 560175459776.

The previous prime is 2100657974273. The next prime is 2100657974287. The reversal of 2100657974280 is 824797560012.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2100657974273) and next prime (2100657974287).

It is not an unprimeable number, because it can be changed into a prime (2100657974287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8752741440 + ... + 8752741679.

It is an arithmetic number, because the mean of its divisors is an integer number (196936685100).

Almost surely, 2^{2100657974280} is an apocalyptic number.

2100657974280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2100657974280 is an abundant number, since it is smaller than the sum of its proper divisors (4201315948920).

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

2100657974280 is a wasteful number, since it uses less digits than its factorization.

2100657974280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17505483133 (or 17505483129 counting only the distinct ones).

The product of its (nonzero) digits is 1693440, while the sum is 51.

The spelling of 2100657974280 in words is "two trillion, one hundred billion, six hundred fifty-seven million, nine hundred seventy-four thousand, two hundred eighty".