127350631821 has 16 divisors (see below), whose sum is σ = 194284044800. Its totient is φ = 72687062448.

The previous prime is 127350631753. The next prime is 127350631861. The reversal of 127350631821 is 128136053721.

It is a happy number.

It is not a de Polignac number, because 127350631821 - 2¹¹ = 127350629773 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 127350631821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127350631861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3511831 + ... + 3547908.

It is an arithmetic number, because the mean of its divisors is an integer number (12142752800).

Almost surely, 2^127350631821 is an apocalyptic number.

It is an amenable number.

127350631821 is a deficient number, since it is larger than the sum of its proper divisors (66933412979).

127350631821 is an equidigital number, since it uses as much as digits as its factorization.

127350631821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7060608.

The product of its (nonzero) digits is 60480, while the sum is 39.

The spelling of 127350631821 in words is "one hundred twenty-seven billion, three hundred fifty million, six hundred thirty-one thousand, eight hundred twenty-one".