1263140360240 has 80 divisors (see below), whose sum is σ = 3211183283616. Its totient is φ = 458262835200.

The previous prime is 1263140360221. The next prime is 1263140360269. The reversal of 1263140360240 is 420630413621.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 1263140360197 and 1263140360206.

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, 1276451 + ... + 2038530.

Almost surely, 2^{1263140360240} is an apocalyptic number.

1263140360240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1263140360240 is an abundant number, since it is smaller than the sum of its proper divisors (1948042923376).

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

1263140360240 is a wasteful number, since it uses less digits than its factorization.

1263140360240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3315438 (or 3315432 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 32.

Adding to 1263140360240 its reverse (420630413621), we get a palindrome (1683770773861).

The spelling of 1263140360240 in words is "one trillion, two hundred sixty-three billion, one hundred forty million, three hundred sixty thousand, two hundred forty".