1277626390140 has 24 divisors (see below), whose sum is σ = 3577353892560. Its totient is φ = 340700370688.

The previous prime is 1277626390121. The next prime is 1277626390141. The reversal of 1277626390140 is 410936267721.

It is a self number, because there is not a number n which added to its sum of digits gives 1277626390140.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1277626390141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10646886525 + ... + 10646886644.

It is an arithmetic number, because the mean of its divisors is an integer number (149056412190).

Almost surely, 2^{1277626390140} is an apocalyptic number.

1277626390140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1277626390140 is an abundant number, since it is smaller than the sum of its proper divisors (2299727502420).

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

1277626390140 is a wasteful number, since it uses less digits than its factorization.

1277626390140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21293773181 (or 21293773179 counting only the distinct ones).

The product of its (nonzero) digits is 762048, while the sum is 48.

The spelling of 1277626390140 in words is "one trillion, two hundred seventy-seven billion, six hundred twenty-six million, three hundred ninety thousand, one hundred forty".