1273940812808 has 16 divisors (see below), whose sum is σ = 2388922735680. Its totient is φ = 636894749968.

The previous prime is 1273940812769. The next prime is 1273940812843. The reversal of 1273940812808 is 8082180493721.

It is a self number, because there is not a number n which added to its sum of digits gives 1273940812808.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9385460 + ... + 9520227.

It is an arithmetic number, because the mean of its divisors is an integer number (149307670980).

Almost surely, 2^{1273940812808} is an apocalyptic number.

It is an amenable number.

1273940812808 is a deficient number, since it is larger than the sum of its proper divisors (1114981922872).

1273940812808 is a wasteful number, since it uses less digits than its factorization.

1273940812808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18914116 (or 18914112 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 53.

The spelling of 1273940812808 in words is "one trillion, two hundred seventy-three billion, nine hundred forty million, eight hundred twelve thousand, eight hundred eight".