1250863783655 has 4 divisors (see below), whose sum is σ = 1501036540392. Its totient is φ = 1000691026920.

The previous prime is 1250863783621. The next prime is 1250863783691. The reversal of 1250863783655 is 5563873680521.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1250863783655 - 2⁶ = 1250863783591 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1250863783594 and 1250863783603.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125086378361 + ... + 125086378370.

It is an arithmetic number, because the mean of its divisors is an integer number (375259135098).

Almost surely, 2^{1250863783655} is an apocalyptic number.

1250863783655 is a deficient number, since it is larger than the sum of its proper divisors (250172756737).

1250863783655 is an equidigital number, since it uses as much as digits as its factorization.

1250863783655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250172756736.

The product of its (nonzero) digits is 36288000, while the sum is 59.

The spelling of 1250863783655 in words is "one trillion, two hundred fifty billion, eight hundred sixty-three million, seven hundred eighty-three thousand, six hundred fifty-five".