1261486240096 has 48 divisors (see below), whose sum is σ = 2537530136064. Its totient is φ = 617046181504.

The previous prime is 1261486240037. The next prime is 1261486240097. The reversal of 1261486240096 is 6900426841621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1261486240097) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3186501 + ... + 3560443.

It is an arithmetic number, because the mean of its divisors is an integer number (52865211168).

Almost surely, 2^{1261486240096} is an apocalyptic number.

1261486240096 is a gapful number since it is divisible by the number (16) 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 1261486240096, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1268765068032).

1261486240096 is an abundant number, since it is smaller than the sum of its proper divisors (1276043895968).

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

1261486240096 is a wasteful number, since it uses less digits than its factorization.

1261486240096 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376243 (or 376235 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 49.

The spelling of 1261486240096 in words is "one trillion, two hundred sixty-one billion, four hundred eighty-six million, two hundred forty thousand, ninety-six".