61655001611 has 6 divisors (see below), whose sum is σ = 71721124380. Its totient is φ = 52847144196.

The previous prime is 61655001563. The next prime is 61655001613. The reversal of 61655001611 is 11610055616.

It is not a de Polignac number, because 61655001611 - 2³⁰ = 60581259787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61655001613) 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 5 ways as a sum of consecutive naturals, for example, 629132621 + ... + 629132718.

It is an arithmetic number, because the mean of its divisors is an integer number (11953520730).

Almost surely, 2^61655001611 is an apocalyptic number.

61655001611 is a deficient number, since it is larger than the sum of its proper divisors (10066122769).

61655001611 is a wasteful number, since it uses less digits than its factorization.

61655001611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1258265353 (or 1258265346 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 32.

The spelling of 61655001611 in words is "sixty-one billion, six hundred fifty-five million, one thousand, six hundred eleven".