61123795199 has 24 divisors (see below), whose sum is σ = 66757220352. Its totient is φ = 55801690560.

The previous prime is 61123795189. The next prime is 61123795223. The reversal of 61123795199 is 99159732116.

It is not a de Polignac number, because 61123795199 - 2³² = 56828827903 is a prime.

It is a super-2 number, since 2×61123795199² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61123795199.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61123795129) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3791534 + ... + 3807620.

It is an arithmetic number, because the mean of its divisors is an integer number (2781550848).

Almost surely, 2^61123795199 is an apocalyptic number.

61123795199 is a deficient number, since it is larger than the sum of its proper divisors (5633425153).

61123795199 is a wasteful number, since it uses less digits than its factorization.

61123795199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16287 (or 16214 counting only the distinct ones).

The product of its digits is 918540, while the sum is 53.

The spelling of 61123795199 in words is "sixty-one billion, one hundred twenty-three million, seven hundred ninety-five thousand, one hundred ninety-nine".