127777763890 has 16 divisors (see below), whose sum is σ = 262857114432. Its totient is φ = 43809519024.

The previous prime is 127777763887. The next prime is 127777763899. The reversal of 127777763890 is 98367777721.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (127777763899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 912698244 + ... + 912698383.

It is an arithmetic number, because the mean of its divisors is an integer number (16428569652).

Almost surely, 2^127777763890 is an apocalyptic number.

127777763890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

127777763890 is an abundant number, since it is smaller than the sum of its proper divisors (135079350542).

127777763890 is a wasteful number, since it uses less digits than its factorization.

127777763890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1825396641.

The product of its (nonzero) digits is 43563744, while the sum is 64.

The spelling of 127777763890 in words is "one hundred twenty-seven billion, seven hundred seventy-seven million, seven hundred sixty-three thousand, eight hundred ninety".