1281465083976 has 128 divisors (see below), whose sum is σ = 4007189007360. Its totient is φ = 331763731200.

The previous prime is 1281465083957. The next prime is 1281465083981. The reversal of 1281465083976 is 6793805641821.

It is a happy number.

It is a super-2 number, since 2×1281465083976² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 562035 + ... + 1696706.

It is an arithmetic number, because the mean of its divisors is an integer number (31306164120).

It is a 1-persistent number, because it is pandigital, but 2⋅1281465083976 = 2562930167952 is not.

Almost surely, 2^{1281465083976} is an apocalyptic number.

It is an amenable number.

1281465083976 is an abundant number, since it is smaller than the sum of its proper divisors (2725723923384).

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

1281465083976 is a wasteful number, since it uses less digits than its factorization.

1281465083976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2259075 (or 2259071 counting only the distinct ones).

The product of its (nonzero) digits is 17418240, while the sum is 60.

The spelling of 1281465083976 in words is "one trillion, two hundred eighty-one billion, four hundred sixty-five million, eighty-three thousand, nine hundred seventy-six".