67961554611 has 4 divisors (see below), whose sum is σ = 90615406152. Its totient is φ = 45307703072.

The previous prime is 67961554561. The next prime is 67961554627. The reversal of 67961554611 is 11645516976.

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 67961554611 - 2⁶ = 67961554547 is a prime.

It is a super-2 number, since 2×67961554611² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (67961554511) 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, 11326925766 + ... + 11326925771.

It is an arithmetic number, because the mean of its divisors is an integer number (22653851538).

Almost surely, 2^67961554611 is an apocalyptic number.

67961554611 is a deficient number, since it is larger than the sum of its proper divisors (22653851541).

67961554611 is a wasteful number, since it uses less digits than its factorization.

67961554611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22653851540.

The product of its digits is 1360800, while the sum is 51.

The spelling of 67961554611 in words is "sixty-seven billion, nine hundred sixty-one million, five hundred fifty-four thousand, six hundred eleven".