1261463202132 has 96 divisors (see below), whose sum is σ = 3480990750720. Its totient is φ = 347880624000.

The previous prime is 1261463202121. The next prime is 1261463202133. The reversal of 1261463202132 is 2312023641621.

It is a junction number, because it is equal to n+sod(n) for n = 1261463202093 and 1261463202102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1261463202133) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7839793 + ... + 7999079.

It is an arithmetic number, because the mean of its divisors is an integer number (36260320320).

Almost surely, 2^{1261463202132} is an apocalyptic number.

1261463202132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1261463202132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1740495375360).

1261463202132 is an abundant number, since it is smaller than the sum of its proper divisors (2219527548588).

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

1261463202132 is a wasteful number, since it uses less digits than its factorization.

1261463202132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162581 (or 162579 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 33.

Adding to 1261463202132 its reverse (2312023641621), we get a palindrome (3573486843753).

The spelling of 1261463202132 in words is "one trillion, two hundred sixty-one billion, four hundred sixty-three million, two hundred two thousand, one hundred thirty-two".