61163142312 has 64 divisors (see below), whose sum is σ = 154285560000. Its totient is φ = 20204647424.

The previous prime is 61163142241. The next prime is 61163142329. The reversal of 61163142312 is 21324136116.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 61163142312.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1564864 + ... + 1603472.

It is an arithmetic number, because the mean of its divisors is an integer number (2410711875).

Almost surely, 2^61163142312 is an apocalyptic number.

It is an amenable number.

61163142312 is an abundant number, since it is smaller than the sum of its proper divisors (93122417688).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61163142312 is a wasteful number, since it uses less digits than its factorization.

61163142312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39210 (or 39206 counting only the distinct ones).

The product of its digits is 5184, while the sum is 30.

Adding to 61163142312 its reverse (21324136116), we get a palindrome (82487278428).

The spelling of 61163142312 in words is "sixty-one billion, one hundred sixty-three million, one hundred forty-two thousand, three hundred twelve".