1272108678648 has 32 divisors (see below), whose sum is σ = 3180305754960. Its totient is φ = 424031685120.

The previous prime is 1272108678623. The next prime is 1272108678649. The reversal of 1272108678648 is 8468768012721.

It is a super-2 number, since 2×1272108678648² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1272108678591 and 1272108678600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1272108678649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2603286 + ... + 3053082.

Almost surely, 2^{1272108678648} is an apocalyptic number.

It is an amenable number.

1272108678648 is an abundant number, since it is smaller than the sum of its proper divisors (1908197076312).

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

1272108678648 is a wasteful number, since it uses less digits than its factorization.

1272108678648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 567647 (or 567643 counting only the distinct ones).

The product of its (nonzero) digits is 14450688, while the sum is 60.

The spelling of 1272108678648 in words is "one trillion, two hundred seventy-two billion, one hundred eight million, six hundred seventy-eight thousand, six hundred forty-eight".