61159756827 has 8 divisors (see below), whose sum is σ = 87819138064. Its totient is φ = 37636773408.

The previous prime is 61159756807. The next prime is 61159756877. The reversal of 61159756827 is 72865795116.

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

It is not a de Polignac number, because 61159756827 - 2¹⁶ = 61159691291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61159756807) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 784099408 + ... + 784099485.

It is an arithmetic number, because the mean of its divisors is an integer number (10977392258).

Almost surely, 2^61159756827 is an apocalyptic number.

61159756827 is a deficient number, since it is larger than the sum of its proper divisors (26659381237).

61159756827 is a wasteful number, since it uses less digits than its factorization.

61159756827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1568198909.

The product of its digits is 6350400, while the sum is 57.

The spelling of 61159756827 in words is "sixty-one billion, one hundred fifty-nine million, seven hundred fifty-six thousand, eight hundred twenty-seven".