61606601311 has 4 divisors (see below), whose sum is σ = 61607945872. Its totient is φ = 61605256752.

The previous prime is 61606601299. The next prime is 61606601317. The reversal of 61606601311 is 11310660616.

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 61606601311 - 2¹⁷ = 61606470239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61606601317) 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, 601035 + ... + 696028.

It is an arithmetic number, because the mean of its divisors is an integer number (15401986468).

Almost surely, 2^61606601311 is an apocalyptic number.

61606601311 is a deficient number, since it is larger than the sum of its proper divisors (1344561).

61606601311 is a wasteful number, since it uses less digits than its factorization.

61606601311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1344560.

The product of its (nonzero) digits is 3888, while the sum is 31.

The spelling of 61606601311 in words is "sixty-one billion, six hundred six million, six hundred one thousand, three hundred eleven".