1261846254448 has 80 divisors (see below), whose sum is σ = 2648862059200. Its totient is φ = 578863853568.

The previous prime is 1261846254419. The next prime is 1261846254457. The reversal of 1261846254448 is 8444526481621.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41252536 + ... + 41283112.

It is an arithmetic number, because the mean of its divisors is an integer number (33110775740).

Almost surely, 2^{1261846254448} 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 1261846254448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1324431029600).

1261846254448 is an abundant number, since it is smaller than the sum of its proper divisors (1387015804752).

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

1261846254448 is a wasteful number, since it uses less digits than its factorization.

1261846254448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31794 (or 31788 counting only the distinct ones).

The product of its digits is 11796480, while the sum is 55.

The spelling of 1261846254448 in words is "one trillion, two hundred sixty-one billion, eight hundred forty-six million, two hundred fifty-four thousand, four hundred forty-eight".