61094371649 has 4 divisors (see below), whose sum is σ = 61095113664. Its totient is φ = 61093629636.

The previous prime is 61094371643. The next prime is 61094371691. The reversal of 61094371649 is 94617349016.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 61094371649 - 2²⁰ = 61093323073 is a prime.

It is a super-2 number, since 2×61094371649² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61094371597 and 61094371606.

It is not an unprimeable number, because it can be changed into a prime (61094371643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 229517 + ... + 418170.

It is an arithmetic number, because the mean of its divisors is an integer number (15273778416).

Almost surely, 2^61094371649 is an apocalyptic number.

It is an amenable number.

61094371649 is a deficient number, since it is larger than the sum of its proper divisors (742015).

61094371649 is an equidigital number, since it uses as much as digits as its factorization.

61094371649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 742014.

The product of its (nonzero) digits is 979776, while the sum is 50.

The spelling of 61094371649 in words is "sixty-one billion, ninety-four million, three hundred seventy-one thousand, six hundred forty-nine".