61163431233 has 16 divisors (see below), whose sum is σ = 83774156736. Its totient is φ = 39664658880.

The previous prime is 61163431207. The next prime is 61163431289. The reversal of 61163431233 is 33213436116.

It is not a de Polignac number, because 61163431233 - 2⁹ = 61163430721 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61163431194 and 61163431203.

It is not an unprimeable number, because it can be changed into a prime (61163431733) 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, 453310 + ... + 572552.

It is an arithmetic number, because the mean of its divisors is an integer number (5235884796).

Almost surely, 2^61163431233 is an apocalyptic number.

It is an amenable number.

61163431233 is a deficient number, since it is larger than the sum of its proper divisors (22610725503).

61163431233 is a wasteful number, since it uses less digits than its factorization.

61163431233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123904.

The product of its digits is 23328, while the sum is 33.

Adding to 61163431233 its reverse (33213436116), we get a palindrome (94376867349).

The spelling of 61163431233 in words is "sixty-one billion, one hundred sixty-three million, four hundred thirty-one thousand, two hundred thirty-three".