1213585506736 has 20 divisors (see below), whose sum is σ = 2384439131664. Its totient is φ = 598246376000.

The previous prime is 1213585506649. The next prime is 1213585506823. The reversal of 1213585506736 is 6376055853121.

It is an interprime number because it is at equal distance from previous prime (1213585506649) and next prime (1213585506823).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 534147415 + ... + 534149686.

Almost surely, 2^{1213585506736} is an apocalyptic number.

1213585506736 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1213585506736 is a deficient number, since it is larger than the sum of its proper divisors (1170853624928).

1213585506736 is a wasteful number, since it uses less digits than its factorization.

1213585506736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1068297180 (or 1068297174 counting only the distinct ones).

The product of its (nonzero) digits is 4536000, while the sum is 52.

The spelling of 1213585506736 in words is "one trillion, two hundred thirteen billion, five hundred eighty-five million, five hundred six thousand, seven hundred thirty-six".