61111961948159 has 8 divisors (see below), whose sum is σ = 63839311405440. Its totient is φ = 58390471460376.

The previous prime is 61111961948117. The next prime is 61111961948183. The reversal of 61111961948159 is 95184916911116.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61111961948159 - 2³² = 61107666980863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61111961942159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1464721049 + ... + 1464762770.

It is an arithmetic number, because the mean of its divisors is an integer number (7979913925680).

Almost surely, 2^{61111961948159} is an apocalyptic number.

61111961948159 is a deficient number, since it is larger than the sum of its proper divisors (2727349457281).

61111961948159 is a wasteful number, since it uses less digits than its factorization.

61111961948159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2929484749.

The product of its digits is 4199040, while the sum is 62.

The spelling of 61111961948159 in words is "sixty-one trillion, one hundred eleven billion, nine hundred sixty-one million, nine hundred forty-eight thousand, one hundred fifty-nine".