61067764121 has 16 divisors (see below), whose sum is σ = 75203251200. Its totient is φ = 48289756608.

The previous prime is 61067764099. The next prime is 61067764133. The reversal of 61067764121 is 12146776016.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61067764121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61067764151) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 30686 + ... + 350823.

It is an arithmetic number, because the mean of its divisors is an integer number (4700203200).

Almost surely, 2^61067764121 is an apocalyptic number.

It is an amenable number.

61067764121 is a deficient number, since it is larger than the sum of its proper divisors (14135487079).

61067764121 is a wasteful number, since it uses less digits than its factorization.

61067764121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383288.

The product of its (nonzero) digits is 84672, while the sum is 41.

The spelling of 61067764121 in words is "sixty-one billion, sixty-seven million, seven hundred sixty-four thousand, one hundred twenty-one".