61101066501 has 8 divisors (see below), whose sum is σ = 90520098560. Its totient is φ = 40734044316.

The previous prime is 61101066491. The next prime is 61101066529. The reversal of 61101066501 is 10566010116.

61101066501 is a `hidden beast` number, since 6 + 1 + 1 + 0 + 1 + 0 + 6 + 650 + 1 = 666.

It is not a de Polignac number, because 61101066501 - 2⁶ = 61101066437 is a prime.

It is a super-3 number, since 3×61101066501³ (a number of 33 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 2263002463 = 61101066501 / (6 + 1 + 1 + 0 + 1 + 0 + 6 + 6 + 5 + 0 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61101066581) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1131501205 + ... + 1131501258.

It is an arithmetic number, because the mean of its divisors is an integer number (11315012320).

Almost surely, 2^61101066501 is an apocalyptic number.

It is an amenable number.

61101066501 is a deficient number, since it is larger than the sum of its proper divisors (29419032059).

61101066501 is a wasteful number, since it uses less digits than its factorization.

61101066501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2263002472 (or 2263002466 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

Adding to 61101066501 its reverse (10566010116), we get a palindrome (71667076617).

The spelling of 61101066501 in words is "sixty-one billion, one hundred one million, sixty-six thousand, five hundred one".