1263252140136 has 96 divisors (see below), whose sum is σ = 4115859134400. Its totient is φ = 341932907520.

The previous prime is 1263252140113. The next prime is 1263252140141. The reversal of 1263252140136 is 6310412523621.

1263252140136 is a `hidden beast` number, since 1 + 2 + 63 + 2 + 521 + 40 + 1 + 36 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 1263252140136.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 65949705 + ... + 65968856.

It is an arithmetic number, because the mean of its divisors is an integer number (42873532650).

Almost surely, 2^{1263252140136} is an apocalyptic number.

It is an amenable number.

1263252140136 is an abundant number, since it is smaller than the sum of its proper divisors (2852606994264).

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

1263252140136 is a wasteful number, since it uses less digits than its factorization.

1263252140136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131918599 (or 131918592 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

Adding to 1263252140136 its reverse (6310412523621), we get a palindrome (7573664663757).

The spelling of 1263252140136 in words is "one trillion, two hundred sixty-three billion, two hundred fifty-two million, one hundred forty thousand, one hundred thirty-six".