1213375472536 has 16 divisors (see below), whose sum is σ = 2280214636200. Its totient is φ = 605318236224.

The previous prime is 1213375472531. The next prime is 1213375472539. The reversal of 1213375472536 is 6352745733121.

It is a super-2 number, since 2×1213375472536² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1213375472536.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213375472531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 171183741 + ... + 171190828.

Almost surely, 2^{1213375472536} is an apocalyptic number.

It is an amenable number.

1213375472536 is a deficient number, since it is larger than the sum of its proper divisors (1066839163664).

1213375472536 is a wasteful number, since it uses less digits than its factorization.

1213375472536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342375018 (or 342375014 counting only the distinct ones).

The product of its digits is 3175200, while the sum is 49.

The spelling of 1213375472536 in words is "one trillion, two hundred thirteen billion, three hundred seventy-five million, four hundred seventy-two thousand, five hundred thirty-six".