1212746534156 has 24 divisors (see below), whose sum is σ = 2168730728640. Its totient is φ = 593124288512.

The previous prime is 1212746534149. The next prime is 1212746534173. The reversal of 1212746534156 is 6514356472121.

It is a super-2 number, since 2×1212746534156² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a self number, because there is not a number n which added to its sum of digits gives 1212746534156.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1566005 + ... + 2208588.

It is an arithmetic number, because the mean of its divisors is an integer number (90363780360).

Almost surely, 2^{1212746534156} is an apocalyptic number.

It is an amenable number.

1212746534156 is a deficient number, since it is larger than the sum of its proper divisors (955984194484).

1212746534156 is a wasteful number, since it uses less digits than its factorization.

1212746534156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3776353 (or 3776351 counting only the distinct ones).

The product of its digits is 1209600, while the sum is 47.

The spelling of 1212746534156 in words is "one trillion, two hundred twelve billion, seven hundred forty-six million, five hundred thirty-four thousand, one hundred fifty-six".