127870705818820 has 24 divisors (see below), whose sum is σ = 268557756395544. Its totient is φ = 51142706294016.

The previous prime is 127870705818787. The next prime is 127870705818893. The reversal of 127870705818820 is 28818507078721.

It can be written as a sum of positive squares in 4 ways, for example, as 13851363514564 + 114019342304256 = 3721742^2 + 10677984^2 .

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, 348314049 + ... + 348680968.

It is an arithmetic number, because the mean of its divisors is an integer number (11189906516481).

Almost surely, 2^{127870705818820} is an apocalyptic number.

127870705818820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

127870705818820 is an abundant number, since it is smaller than the sum of its proper divisors (140687050576724).

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

127870705818820 is a wasteful number, since it uses less digits than its factorization.

127870705818820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 697004199 (or 697004197 counting only the distinct ones).

The product of its (nonzero) digits is 28098560, while the sum is 64.

The spelling of 127870705818820 in words is "one hundred twenty-seven trillion, eight hundred seventy billion, seven hundred five million, eight hundred eighteen thousand, eight hundred twenty".