61056001111 has 24 divisors (see below), whose sum is σ = 72225290976. Its totient is φ = 51449670720.

The previous prime is 61056001073. The next prime is 61056001187. The reversal of 61056001111 is 11110065016.

It is not a de Polignac number, because 61056001111 - 2¹⁵ = 61055968343 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 (61056001711) 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 23 ways as a sum of consecutive naturals, for example, 7908025 + ... + 7915741.

It is an arithmetic number, because the mean of its divisors is an integer number (3009387124).

Almost surely, 2^61056001111 is an apocalyptic number.

61056001111 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

61056001111 is a deficient number, since it is larger than the sum of its proper divisors (11169289865).

61056001111 is a wasteful number, since it uses less digits than its factorization.

61056001111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10439 (or 10432 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 22.

Adding to 61056001111 its reverse (11110065016), we get a palindrome (72166066127).

The spelling of 61056001111 in words is "sixty-one billion, fifty-six million, one thousand, one hundred eleven".