1276140203380 has 144 divisors (see below), whose sum is σ = 3129895835136. Its totient is φ = 435787672320.

The previous prime is 1276140203363. The next prime is 1276140203411. The reversal of 1276140203380 is 833020416721.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 286964317 + ... + 286968763.

It is an arithmetic number, because the mean of its divisors is an integer number (21735387744).

Almost surely, 2^{1276140203380} is an apocalyptic number.

1276140203380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1276140203380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1564947917568).

1276140203380 is an abundant number, since it is smaller than the sum of its proper divisors (1853755631756).

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

1276140203380 is a wasteful number, since it uses less digits than its factorization.

1276140203380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5574 (or 5565 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 37.

The spelling of 1276140203380 in words is "one trillion, two hundred seventy-six billion, one hundred forty million, two hundred three thousand, three hundred eighty".