1277765125014 has 96 divisors (see below), whose sum is σ = 2983494007296. Its totient is φ = 363759318720.

The previous prime is 1277765125001. The next prime is 1277765125027. The reversal of 1277765125014 is 4105215677721.

It is an interprime number because it is at equal distance from previous prime (1277765125001) and next prime (1277765125027).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 139291732 + ... + 139300904.

It is an arithmetic number, because the mean of its divisors is an integer number (31078062576).

Almost surely, 2^{1277765125014} is an apocalyptic number.

1277765125014 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1277765125014, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1491747003648).

1277765125014 is an abundant number, since it is smaller than the sum of its proper divisors (1705728882282).

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

1277765125014 is a wasteful number, since it uses less digits than its factorization.

1277765125014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10850 (or 10843 counting only the distinct ones).

The product of its (nonzero) digits is 823200, while the sum is 48.

The spelling of 1277765125014 in words is "one trillion, two hundred seventy-seven billion, seven hundred sixty-five million, one hundred twenty-five thousand, fourteen".