1272016780203 has 16 divisors (see below), whose sum is σ = 1827714018816. Its totient is φ = 782253106080.

The previous prime is 1272016780147. The next prime is 1272016780207. The reversal of 1272016780203 is 3020876102721.

It is not a de Polignac number, because 1272016780203 - 2¹⁰ = 1272016779179 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (1272016780207) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10908993 + ... + 11024978.

It is an arithmetic number, because the mean of its divisors is an integer number (114232126176).

Almost surely, 2^{1272016780203} is an apocalyptic number.

1272016780203 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1272016780203 is a deficient number, since it is larger than the sum of its proper divisors (555697238613).

1272016780203 is a wasteful number, since it uses less digits than its factorization.

1272016780203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21935474.

The product of its (nonzero) digits is 56448, while the sum is 39.

The spelling of 1272016780203 in words is "one trillion, two hundred seventy-two billion, sixteen million, seven hundred eighty thousand, two hundred three".