61011011101 has 4 divisors (see below), whose sum is σ = 63114839100. Its totient is φ = 58907183104.

The previous prime is 61011011071. The next prime is 61011011129. The reversal of 61011011101 is 10111011016.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 50591705476 + 10419305625 = 224926^2 + 102075^2 .

It is not a de Polignac number, because 61011011101 - 2⁵ = 61011011069 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 (61011017101) 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, 1051913956 + ... + 1051914013.

It is an arithmetic number, because the mean of its divisors is an integer number (15778709775).

Almost surely, 2^61011011101 is an apocalyptic number.

It is an amenable number.

61011011101 is a deficient number, since it is larger than the sum of its proper divisors (2103827999).

61011011101 is a wasteful number, since it uses less digits than its factorization.

61011011101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2103827998.

The product of its (nonzero) digits is 6, while the sum is 13.

Adding to 61011011101 its reverse (10111011016), we get a palindrome (71122022117).

The spelling of 61011011101 in words is "sixty-one billion, eleven million, eleven thousand, one hundred one".