61116449863 has 6 divisors (see below), whose sum is σ = 71094645816. Its totient is φ = 52385528412.

The previous prime is 61116449837. The next prime is 61116449869. The reversal of 61116449863 is 36894461116.

It is not a de Polignac number, because 61116449863 - 2²¹ = 61114352711 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49), and also a Moran number because the ratio is a prime number: 1247274487 = 61116449863 / (6 + 1 + 1 + 1 + 6 + 4 + 4 + 9 + 8 + 6 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61116449869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 623637195 + ... + 623637292.

It is an arithmetic number, because the mean of its divisors is an integer number (11849107636).

Almost surely, 2^61116449863 is an apocalyptic number.

61116449863 is a deficient number, since it is larger than the sum of its proper divisors (9978195953).

61116449863 is a wasteful number, since it uses less digits than its factorization.

61116449863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1247274501 (or 1247274494 counting only the distinct ones).

The product of its digits is 746496, while the sum is 49.

The spelling of 61116449863 in words is "sixty-one billion, one hundred sixteen million, four hundred forty-nine thousand, eight hundred sixty-three".