61596291099 has 32 divisors (see below), whose sum is σ = 98434252800. Its totient is φ = 33498302112.

The previous prime is 61596291091. The next prime is 61596291139. The reversal of 61596291099 is 99019269516.

It is not a de Polignac number, because 61596291099 - 2³ = 61596291091 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61596291091) 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 31 ways as a sum of consecutive naturals, for example, 224307 + ... + 416540.

It is an arithmetic number, because the mean of its divisors is an integer number (3076070400).

Almost surely, 2^61596291099 is an apocalyptic number.

61596291099 is a gapful number since it is divisible by the number (69) formed by its first and last digit.

61596291099 is a deficient number, since it is larger than the sum of its proper divisors (36837961701).

61596291099 is a wasteful number, since it uses less digits than its factorization.

61596291099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641079.

The product of its (nonzero) digits is 2361960, while the sum is 57.

The spelling of 61596291099 in words is "sixty-one billion, five hundred ninety-six million, two hundred ninety-one thousand, ninety-nine".