61400006111 has 4 divisors (see below), whose sum is σ = 64631585400. Its totient is φ = 58168426824.

The previous prime is 61400006077. The next prime is 61400006177. The reversal of 61400006111 is 11160000416.

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

It is a cyclic number.

It is not a de Polignac number, because 61400006111 - 2¹⁴ = 61399989727 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 (61400000111) 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, 1615789616 + ... + 1615789653.

It is an arithmetic number, because the mean of its divisors is an integer number (16157896350).

Almost surely, 2^61400006111 is an apocalyptic number.

61400006111 is a deficient number, since it is larger than the sum of its proper divisors (3231579289).

61400006111 is a wasteful number, since it uses less digits than its factorization.

61400006111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3231579288.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 61400006111 its reverse (11160000416), we get a palindrome (72560006527).

The spelling of 61400006111 in words is "sixty-one billion, four hundred million, six thousand, one hundred eleven".