1281647696952 has 48 divisors (see below), whose sum is σ = 3727240754760. Its totient is φ = 366185055936.

The previous prime is 1281647696897. The next prime is 1281647696971. The reversal of 1281647696952 is 2596967461821.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 544917063 + ... + 544919414.

Almost surely, 2^{1281647696952} is an apocalyptic number.

1281647696952 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1281647696952 is an abundant number, since it is smaller than the sum of its proper divisors (2445593057808).

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

1281647696952 is a wasteful number, since it uses less digits than its factorization.

1281647696952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1089836500 (or 1089836489 counting only the distinct ones).

The product of its digits is 78382080, while the sum is 66.

The spelling of 1281647696952 in words is "one trillion, two hundred eighty-one billion, six hundred forty-seven million, six hundred ninety-six thousand, nine hundred fifty-two".