61055001111 has 8 divisors (see below), whose sum is σ = 87668719600. Its totient is φ = 37572308352.

The previous prime is 61055001107. The next prime is 61055001113. The reversal of 61055001111 is 11110055016.

It is a happy number.

61055001111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 61055001111 - 2² = 61055001107 is a prime.

It is a super-2 number, since 2×61055001111² (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 (61055001113) 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, 782756386 + ... + 782756463.

It is an arithmetic number, because the mean of its divisors is an integer number (10958589950).

Almost surely, 2^61055001111 is an apocalyptic number.

61055001111 is a deficient number, since it is larger than the sum of its proper divisors (26613718489).

61055001111 is a wasteful number, since it uses less digits than its factorization.

61055001111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1565512865.

The product of its (nonzero) digits is 150, while the sum is 21.

Adding to 61055001111 its reverse (11110055016), we get a palindrome (72165056127).

The spelling of 61055001111 in words is "sixty-one billion, fifty-five million, one thousand, one hundred eleven".