61307311611 has 32 divisors (see below), whose sum is σ = 100621373440. Its totient is φ = 32333261184.

The previous prime is 61307311607. The next prime is 61307311613. The reversal of 61307311611 is 11611370316.

It is not a de Polignac number, because 61307311611 - 2² = 61307311607 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61307311613) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2737686 + ... + 2759988.

It is an arithmetic number, because the mean of its divisors is an integer number (3144417920).

Almost surely, 2^61307311611 is an apocalyptic number.

61307311611 is a deficient number, since it is larger than the sum of its proper divisors (39314061829).

61307311611 is a wasteful number, since it uses less digits than its factorization.

61307311611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32395.

The product of its (nonzero) digits is 2268, while the sum is 30.

Adding to 61307311611 its reverse (11611370316), we get a palindrome (72918681927).

The spelling of 61307311611 in words is "sixty-one billion, three hundred seven million, three hundred eleven thousand, six hundred eleven".