1281513212496 has 60 divisors (see below), whose sum is σ = 3912498676320. Its totient is φ = 388337336640.

The previous prime is 1281513212471. The next prime is 1281513212527. The reversal of 1281513212496 is 6942123151821.

1281513212496 is a `hidden beast` number, since 1 + 2 + 8 + 1 + 513 + 2 + 124 + 9 + 6 = 666.

It is a super-2 number, since 2×1281513212496² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 404516476 + ... + 404519643.

It is an arithmetic number, because the mean of its divisors is an integer number (65208311272).

Almost surely, 2^{1281513212496} is an apocalyptic number.

1281513212496 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1281513212496 is an abundant number, since it is smaller than the sum of its proper divisors (2630985463824).

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

1281513212496 is a wasteful number, since it uses less digits than its factorization.

1281513212496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 809036144 (or 809036135 counting only the distinct ones).

The product of its digits is 207360, while the sum is 45.

The spelling of 1281513212496 in words is "one trillion, two hundred eighty-one billion, five hundred thirteen million, two hundred twelve thousand, four hundred ninety-six".