61099710686 has 32 divisors (see below), whose sum is σ = 107370144000. Its totient is φ = 25529515200.

The previous prime is 61099710613. The next prime is 61099710689. The reversal of 61099710686 is 68601799016.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61099710689) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 824921 + ... + 895931.

It is an arithmetic number, because the mean of its divisors is an integer number (3355317000).

Almost surely, 2^61099710686 is an apocalyptic number.

61099710686 is a deficient number, since it is larger than the sum of its proper divisors (46270433314).

61099710686 is a wasteful number, since it uses less digits than its factorization.

61099710686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72560.

The product of its (nonzero) digits is 979776, while the sum is 53.

The spelling of 61099710686 in words is "sixty-one billion, ninety-nine million, seven hundred ten thousand, six hundred eighty-six".