61034543099 has 4 divisors (see below), whose sum is σ = 63003399360. Its totient is φ = 59065686840.

The previous prime is 61034543077. The next prime is 61034543117. The reversal of 61034543099 is 99034543016.

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 61034543099 - 2²⁴ = 61017765883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61034543039) 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, 984428084 + ... + 984428145.

It is an arithmetic number, because the mean of its divisors is an integer number (15750849840).

Almost surely, 2^61034543099 is an apocalyptic number.

61034543099 is a deficient number, since it is larger than the sum of its proper divisors (1968856261).

61034543099 is a wasteful number, since it uses less digits than its factorization.

61034543099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1968856260.

The product of its (nonzero) digits is 349920, while the sum is 44.

The spelling of 61034543099 in words is "sixty-one billion, thirty-four million, five hundred forty-three thousand, ninety-nine".