127788851090 has 32 divisors (see below), whose sum is σ = 230385904560. Its totient is φ = 51034281984.

The previous prime is 127788851053. The next prime is 127788851137. The reversal of 127788851090 is 90158887721.

It can be written as a sum of positive squares in 8 ways, for example, as 9296623561 + 118492227529 = 96419^2 + 344227^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24990374 + ... + 24995486.

Almost surely, 2^127788851090 is an apocalyptic number.

127788851090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

127788851090 is a deficient number, since it is larger than the sum of its proper divisors (102597053470).

127788851090 is a wasteful number, since it uses less digits than its factorization.

127788851090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8606.

The product of its (nonzero) digits is 2257920, while the sum is 56.

The spelling of 127788851090 in words is "one hundred twenty-seven billion, seven hundred eighty-eight million, eight hundred fifty-one thousand, ninety".