67561241121 has 12 divisors (see below), whose sum is σ = 106460137680. Its totient is φ = 40946206680.

The previous prime is 67561241119. The next prime is 67561241123. The reversal of 67561241121 is 12114216576.

67561241121 is a `hidden beast` number, since 6 + 7 + 5 + 612 + 4 + 11 + 21 = 666.

It is an interprime number because it is at equal distance from previous prime (67561241119) and next prime (67561241123).

It is not a de Polignac number, because 67561241121 - 2¹ = 67561241119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (67561241123) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 341218291 + ... + 341218488.

It is an arithmetic number, because the mean of its divisors is an integer number (8871678140).

Almost surely, 2^67561241121 is an apocalyptic number.

It is an amenable number.

67561241121 is a deficient number, since it is larger than the sum of its proper divisors (38898896559).

67561241121 is a wasteful number, since it uses less digits than its factorization.

67561241121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 682436796 (or 682436793 counting only the distinct ones).

The product of its digits is 20160, while the sum is 36.

Adding to 67561241121 its reverse (12114216576), we get a palindrome (79675457697).

The spelling of 67561241121 in words is "sixty-seven billion, five hundred sixty-one million, two hundred forty-one thousand, one hundred twenty-one".