60611010991 has 4 divisors (see below), whose sum is σ = 61604634184. Its totient is φ = 59617387800.

The previous prime is 60611010953. The next prime is 60611011007. The reversal of 60611010991 is 19901011606.

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 60611010991 - 2¹¹ = 60611008943 is a prime.

It is a super-2 number, since 2×60611010991² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (60611010491) 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 3 ways as a sum of consecutive naturals, for example, 496811505 + ... + 496811626.

It is an arithmetic number, because the mean of its divisors is an integer number (15401158546).

Almost surely, 2^60611010991 is an apocalyptic number.

60611010991 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

60611010991 is a deficient number, since it is larger than the sum of its proper divisors (993623193).

60611010991 is an equidigital number, since it uses as much as digits as its factorization.

60611010991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 993623192.

The product of its (nonzero) digits is 2916, while the sum is 34.

The spelling of 60611010991 in words is "sixty billion, six hundred eleven million, ten thousand, nine hundred ninety-one".