1281629160704 has 72 divisors (see below), whose sum is σ = 2574679043328. Its totient is φ = 636703119360.

The previous prime is 1281629160683. The next prime is 1281629160733. The reversal of 1281629160704 is 4070619261821.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129832889 + ... + 129842759.

Almost surely, 2^{1281629160704} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1281629160704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1287339521664).

1281629160704 is an abundant number, since it is smaller than the sum of its proper divisors (1293049882624).

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

1281629160704 is an equidigital number, since it uses as much as digits as its factorization.

1281629160704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13091 (or 13077 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 47.

The spelling of 1281629160704 in words is "one trillion, two hundred eighty-one billion, six hundred twenty-nine million, one hundred sixty thousand, seven hundred four".