61101101155001 has 4 divisors (see below), whose sum is σ = 61318542796404. Its totient is φ = 60883659513600.

The previous prime is 61101101154991. The next prime is 61101101155037. The reversal of 61101101155001 is 10055110110116.

61101101155001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 15115953029776 + 45985148125225 = 3887924^2 + 6781235^2 .

It is a cyclic number.

It is not a de Polignac number, because 61101101155001 - 2⁶ = 61101101154937 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (61101101158001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108720820280 + ... + 108720820841.

It is an arithmetic number, because the mean of its divisors is an integer number (15329635699101).

Almost surely, 2^{61101101155001} is an apocalyptic number.

It is an amenable number.

61101101155001 is a deficient number, since it is larger than the sum of its proper divisors (217441641403).

61101101155001 is a wasteful number, since it uses less digits than its factorization.

61101101155001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217441641402.

The product of its (nonzero) digits is 150, while the sum is 23.

Adding to 61101101155001 its reverse (10055110110116), we get a palindrome (71156211265117).

The spelling of 61101101155001 in words is "sixty-one trillion, one hundred one billion, one hundred one million, one hundred fifty-five thousand, one".