7212161387435 has 4 divisors (see below), whose sum is σ = 8654593664928. Its totient is φ = 5769729109944.

The previous prime is 7212161387413. The next prime is 7212161387437. The reversal of 7212161387435 is 5347831612127.

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

It is a cyclic number.

It is not a de Polignac number, because 7212161387435 - 2¹⁶ = 7212161321899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7212161387437) by changing a digit.

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, 721216138739 + ... + 721216138748.

It is an arithmetic number, because the mean of its divisors is an integer number (2163648416232).

Almost surely, 2^{7212161387435} is an apocalyptic number.

7212161387435 is a deficient number, since it is larger than the sum of its proper divisors (1442432277493).

7212161387435 is a wasteful number, since it uses less digits than its factorization.

7212161387435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1442432277492.

The product of its digits is 1693440, while the sum is 50.

The spelling of 7212161387435 in words is "seven trillion, two hundred twelve billion, one hundred sixty-one million, three hundred eighty-seven thousand, four hundred thirty-five".