1272913263090 has 128 divisors (see below), whose sum is σ = 4107552145920. Its totient is φ = 273836795904.

The previous prime is 1272913263067. The next prime is 1272913263101. The reversal of 1272913263090 is 903623192721.

1272913263090 is a `hidden beast` number, since 1 + 2 + 7 + 2 + 9 + 1 + 3 + 2 + 630 + 9 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 19776667 + ... + 19840926.

It is an arithmetic number, because the mean of its divisors is an integer number (32090251140).

Almost surely, 2^{1272913263090} is an apocalyptic number.

1272913263090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1272913263090 is an abundant number, since it is smaller than the sum of its proper divisors (2834638882830).

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

1272913263090 is a wasteful number, since it uses less digits than its factorization.

1272913263090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39617633 (or 39617627 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 45.

The spelling of 1272913263090 in words is "one trillion, two hundred seventy-two billion, nine hundred thirteen million, two hundred sixty-three thousand, ninety".