1272741655850 has 48 divisors (see below), whose sum is σ = 2706388881216. Its totient is φ = 436222800000.

The previous prime is 1272741655799. The next prime is 1272741655943. The reversal of 1272741655850 is 585561472721.

It is a junction number, because it is equal to n+sod(n) for n = 1272741655792 and 1272741655801.

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 23 ways as a sum of consecutive naturals, for example, 444485 + ... + 1656215.

It is an arithmetic number, because the mean of its divisors is an integer number (56383101692).

Almost surely, 2^{1272741655850} is an apocalyptic number.

1272741655850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1272741655850 is an abundant number, since it is smaller than the sum of its proper divisors (1433647225366).

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

1272741655850 is a wasteful number, since it uses less digits than its factorization.

1272741655850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1214751 (or 1214746 counting only the distinct ones).

The product of its (nonzero) digits is 4704000, while the sum is 53.

The spelling of 1272741655850 in words is "one trillion, two hundred seventy-two billion, seven hundred forty-one million, six hundred fifty-five thousand, eight hundred fifty".